## Buy Guided MATH 221 Week 3 Quiz Statistics for Decision-Making Collection

**MATH 221 Week 3 Quiz: Statistics for Decision-Making (May 2021)**

**Question:**(CO 3) Consider the following table: If you … the probability distribution for these data, what would be the probability of 50-59?**Question:**(CO 3) Consider the following table of hours … by part-time employees. These employees must work for 5 hours Find the mean of this variable.**Question:**(CO 3) Consider the following table: Find the variance of this variable.**Question:**(CO 3) Consider the following table: Find the standard deviation of this variable.**Question:**(CO 3) Forty-three percent of US teens have … a fax machine. You randomly select 12 US teens. Find the probability that the number of these selected teens that have heard of a fax machine is exactly six (first answer listed below). Find the probability that the number is more than 8 (second answer listed below).**Question:**(CO 3) Ten rugby balls are randomly selected from the production line to see if their shape is correct. Over time, the company has found that 92.4% of all their rugby balls have the correct If exactly 7 of the 10 have the right shape, should the company stop the production line?**Question:**(CO 3) A bottle of water is supposed to have 20 ounces. The bottling company has determined that 98% of bottles have the correct amount. Which of the following describes a binomial experiment that would determine the probability that a case of 36 bottles has all bottles properly filled?**Question:**(CO 3) On the production line the company finds that 99.7% of products are made correctly. You are responsible for quality control and take batches of 30 products from the line and test What number of the 30 being incorrectly made would cause you to shut down production?**Question:**(CO 3) The probability of someone ordering the daily special is 52%. If the restaurant expected 105 people for lunch, how many would you expect to order the daily special?**Question:**(CO 3) Forty-seven percent of employees make judgments about their co-workers based on the cleanliness of their desks. You randomly select 8 employees and ask them if they judge co-workers based on this criterion. The random variable is the number of employees who judge their co-workers by cleanliness. Which outcomes of this binomial distribution would be considered unusual?**Question:**(CO 3) Sixty-five percent of products come off the line ready to ship to distributors. Your quality control department selects 12 products randomly from the line each Looking at the binomial distribution if fewer than how many are within specifications would require that the production line be shut down (unusual) and repaired?**Question:**(CO 3) Out of each 100 products, 93 are ready for purchase by customers. If you selected 27 products, what would be the expected (mean) number that would be ready for purchase by customers?**Question:**(CO 3) Sixty percent of adults have looked at their credit score in the past six months. If you select 31 customers, what is the probability that at least 25 of them have looked at their scores in the past six months?**Question:**(CO 3) One out of every 92 tax returns that a tax auditor examines requires an audit. If 50 returns are selected at random, what is the probability that less than 2 will need an audit?**Question:**(CO 3) Thirty-eight percent of consumers prefer to purchase electronics online. You randomly select 16 consumers. Find the probability that the number who prefer to purchase electronics online is at most 3.**Question:**(CO 3) In the morning, about 25% of adults know what they will have for If one morning, you ask 22 adults if they know what they will have for dinner, what is the probability that more than 8 will say yes?**Question:**(CO 3) Among teenagers, 73% prefer watching shows over the internet, rather than through cable. If you asked 104 teenagers if they … watching shows over the internet, rather than through cable, how many would you expect to say yes?**Question:**(CO 3) Sixty-four percent of those that use drive-through services believe that the employees are at least somewhat rude. If you asked 87 people who use drive-through services if they believe that the employees are at least somewhat rude, what is the probability that at most 60 say yes?

**MATH 221 Week 3 Quiz: Statistics for Decision-Making (v1)**

**Question:**A survey of 128 DeVry statistics students found that 83% read the announcements each week. What is the population and what is the sample?**Question:**In asking all 359-second graders in a school district, it is found that on average, these second graders have 2.5 pets. Is this number a parameter or a statistic and why?**Question:**(CO 1) Classify the data of the top-grossing movies for 2017:**Question:**(CO 1) The data that lists the temperature in Albany, NY each day in the month of February would be classified as what type of data?**Question:**(CO 1) A data set that includes the years in which your hometown team won championships would be classified as what type of data?**Question:**(CO 1) What type of data collection might be best to estimate whether a new medicine is more effective in curing a common cold than aspirin?**Question:**(CO 1) What type of data collection might be best to study the effect of car crashes on humans?**Question:**(CO 1) You need to study the satisfaction of customers of a specific restaurant. You decide to order food and talk to those customers sitting next to you. This would most closely describe which type of sampling technique.**Question:**(CO 1) Which of the following type of graphs would be a Pareto chart?**Question:**(CO 1) In a normally distributed data set of how long customers stay in your store, the mean is 31.7 minutes and the standard deviation is 1.9 minutes. Within what range would you expect 95% of your customers to stay in your store?**Question:**(CO 1) Which of the following graphs would … normally be distributed?**Question:**(CO 1) In a normally distributed data set with a mean of 22 and a standard deviation of 4.1, what percentage of the data would be between 17.9 and 26.1?**Question:**(CO 1) Which of the following would be the standard deviation of this data set: 5, 7, 6, 9, 6, 4, 4, 5, 2, 5?**Question:**(CO 1) What would be the mean of this data set: 8, 9, 7, 508, 7, 1, 5, 3, 4?**Question:**(CO 1) A pharmaceutical company wants to determine if its new medicine helps heal bruises more quickly than not treating the bruise. What type of study would … best suited to make this determination?**Question:**(CO 1) To gather information on customer satisfaction, a researcher goes into the local store and interviews six randomly … customers. This sampling technique is … :**Question:**(CO 1) What is the standard deviation and its meaning given this population of customer ages? 45, 76, 30, 22, 51, 40, 63, 66, 41**Question:**(CO 2) A random number generator is used to select a number from 1 to 100. What is the probability of selecting an odd number?**Question:**(CO 2) What is the sample space of flipping three coins, where H= heads and T= tails?**Question:**(CO 2) Consider the table below. What is the probability that the next person asked has no cats?**Question:**(CO 2) Consider the table below. What is the probability that the next person chosen will be in the 30-39 and 40-49 age groups?**Question:**(CO 2) When a children roll a die for a game, there a probability of rolling a 5 is 17%. This is an example of which type of probability?**Question:**(CO 2) Consider the table below. What is P (over 60’)?**Question:**(CO 2) You are selling your product at a three-day event. Each day there is a 60% chance that you will make money on the first day and lose money on the next three days.**Question:**(CO 2) Consider the table below. What is the probability that a randomly … location is profitable, given that it is in a rural location.**Question:**(CO 2) Consider the table below. What is the probability that a randomly … product is defective, given that it is from the South production facility?**Question:**(CO 2) Classify these events. Selecting a king from a deck of cards, keeping it, and selecting a queen from the same deck. These events would be considered:**Question:**(CO 2) Classify these events. A study found that people who suffer from stress are more likely to have health issues. These events would be considered:**Question:**(CO 2) In a survey of 320 customers, 84 say that service is poor. You select two customers without replacement to get more information on their satisfaction. What is the probability that both say service is poor?**Question:**(CO 2) Randomly select a customer that purchases tofu. Randomly select a customer that purchases chicken. Are these events mutually exclusive?

**MATH-221 Week 3 Quiz: Statistics for Decision-Making (v2)**

**Question:**(CO 1) Among 500 people at the concert, a survey of 35 found 28% found it too loud. What is the population and what is the sample?**Question:**(CO 1) In asking all 349-second graders in a school district, it is found that on average, these second graders have 2.5 pets. Is this number a parameter or a statistic and why?**Question:**(CO 1) Classify the data of all the political parties in the world.**Question:**(CO 1) The data set that lists the temperatures in Albany, NY each day in the month of February would be classified as what type of data?**Question:**(CO 1) A data set that includes the years in which your hometown team won championships would be classified as what type of data:**Question:**(CO 1) What type of data collection might … best to estimate whether a new medicine is more effective in curing a common cold than aspirin?**Question:**(CO 1) What type of data collection might … best to study the effect of a terror attack on a city’s electrical system?**Question:**(CO 1) You need to study the satisfaction of customers of a specific restaurant. You ask every 10 customers as they leave after their meal. This would most closely describe which type of sampling technique.**Question:**(CO 1) Which of the following graphs would … a histogram?**Question:**(CO 1) In a normally distributed data set of how long customers stay in your store, the mean is 50.3 minutes and the standard deviation is 3.6 minutes. Within what range would you expect 95% of your customers to stay in your store?**Question:**(CO 1) Which of the following graphs would be considered right skewed?**Question:**(CO 1) In a normally distributed data set with a mean of 19 and a standard deviation of 2.6, what percentage of the data would be between 16.4 and 21.6?**Question:**(CO 1) Which of the following would be the standard deviation for this sample data set: 5, 7, 3, 9, 2, 4, 4, 9, 5, 9, 3?**Question:**(CO 1) What would be the mean of this data set: 8, 9, 7, 244, 7, 1, 5, 3, 4?**Question:**(CO 1) A political campaign wants to know the public’s reaction to their candidate’s latest policy initiative. What type of study would be best suited to make this determination?**Question:**(CO 1) To gather information on customer satisfaction, a researcher goes into the local store and interviews six randomly … customers. This sampling technique is … :**Question:**(CO 1) What is the standard deviation and its meaning given this population of customer ages? 45, 76, 30, 22, 24, 40, 63, 66, 27**Question:**(CO 2) A random number generator is … to select a number from 1 to 100. What is the probability of selecting an even number?**Question:**(CO 2) What is the sample space for responding to a question whose answers are Up, Down, Left, or Right along with a question on preference between Blue and Red?**Question:**(CO 2) Consider the table below. What is the probability that the next person asked has no cats?**Question:**(CO 2) Consider the table below. What is the probability that the next person chosen will be in the 40-49 or 50-59 age groups?**Question:**(CO 2) According to company records, the probability that a dishwasher will need repairs during its first six years is 0.09. This is an example of which type of probability?**Question:**(CO 2) Consider the table below. What is P(50-69’)?**Question:**(CO 2) You are selling your product at a three-day event. Each day, there is a 60% chance that you will make money. What is the probability that you will make money on the first day and lose money on the second day, and make money on the third?**Question:**(CO 2) Consider the table below. Find the probability that a randomly … location is in an urban location, given that it is operating a loss.**Question:**(CO 2) Consider the table below. Find the probability that a randomly … product is defective, given that it is from the South production facility.**Question:**(CO 2) Classify these events. Selecting a king from a deck of cards, replacing it, and selecting a queen from the same deck. These events would be considered:**Question:**(CO 2) Classify these events. Some customers purchase lots of items and some customers use shopping carts. These events would be considered:**Question:**(CO 2) In a survey of 352 customers, 81 say that service is poor. You select two customers without replacement to get more information on their satisfaction. What is the probability that both say service is poor?**Question:**(CO 2) Randomly select a customer that takes the bus to our store. Randomly select a customer that drove to our store. Are these events mutually exclusive?

**MATH 221 Week 3 Quiz: Statistics for Decision-Making (v3)**

**Question:**(CO 1) A survey of 385 people who like wild sweaters found that 74% had a wild holiday sweater. What is the population and what is the sample?**Question:**(CO 1) The measurements of 100 products from the assembly line show that 99% are correct. Is this percentage a parameter or a statistic and why?**Question:**(CO 1) Classify the data of the number of customers at a restaurant.**Question:**(CO 1) The data set that lists the temperatures in Albany, NY each day in the month of February would be classified as what type of data?**Question:**(CO 1) A data set that includes the number of products that were produced within each hour by a company would be classified as what type of data?**Question:**(CO 1) What type of data collection might … best to estimate the impact of exercise on longevity?**Question:**(CO 1) What type of data collection might … best to study the effect of a terror attack on a city’s electrical system?**Question:**(CO 1) You need to study the satisfaction of customers of a specific restaurant. You decide to order food and talk to those customers sitting next to you. This would most closely describe which type of sampling technique.**Question:**(CO 1) Which of the following graphs would … a histogram?**Question:**(CO 1) In a normally distributed data set of how long customers stay in your store, the mean is 31.7 minutes and the standard deviation is 1.9 minutes. Within what range would you expect 95% of your customers to stay in your store?**Question:**(CO 1) Which of the following graphs would … normally be distributed?**Question:**(CO 1) In a normally distributed data set with a mean of 22 and a standard deviation of 4.1, what percentage of the data would … between 17.9 and 26.1?**Question:**(CO 1) Which of the following would be the standard deviation for this sample data set: 5, 7, 3, 9, 2, 4, 4, 9, 5, 9, 3?**Question:**(CO 1) What would be the mean of this data set: 8, 9, 7, 451, 7, 1, 5, 3, 4?**Question:**(CO 1) A city wants to know how many cars come to a complete stop at the stop signs in downtown. What type of study would be best suited to make this determination?**Question:**(CO 1) To gather information on customer satisfaction, a researcher goes into the local store and interviews six randomly … customers. This sampling technique is … :**Question:**(CO 1) What is the standard deviation and its meaning given this population of customer ages? 45, 76, 30, 22, 51, 40, 63, 66, 41**Question:**(CO 2) A random number generator is … to select a number from 1 to 100. What is the probability of selecting an odd number?**Question:**(CO 2) What is the sample space of rolling two four-sided dies?**Question:**(CO 2) Consider the table below. What is the probability that the next person … has four or more cats?**Question:**(CO 2) Consider the table below. What is the probability that the next person chosen will … in the 18-29 or 30-39 age groups?**Question:**(CO 2) Based on the CEO’s perception, a company estimates that a new product will … purchased by 32% of current customers. This is an example of which type of probability?**Question:**(CO 2) Consider the table below. What is P(50-69’)?**Question:**(CO 2) You are selling your product at a three-day event. Each day, there is a 60% chance that you will make money. What is the probability that you will make money on the first day and lose money on the next two days?**Question:**(CO 2) Consider the table below. Find the probability that a randomly … location is in a rural location, given that it is profitable.**Question:**(CO 2) Consider the table below. Find the probability that a randomly … product is defective, given that it is from the South production facility.**Question:**(CO 2) Classify these events. Selecting a king from a deck of cards, replacing it and selecting another king from the same deck. These events would … :**Question:**(CO 2) Classify these events. A study found that people who suffer from stress are more likely to have health issues. These events would be considered:**Question:**(CO 2) In a survey of 352 customers, 81 say that service is poor. You select two customers without replacement to get more information on their satisfaction. What is the probability that both say service is poor?**Question:**(CO 2) Randomly select a customer that takes the bus to our store. Randomly select a customer that drove to our store. Are these events mutually exclusive?

**MATH-221 Week 3 Quiz: Statistics for Decision-Making (v4)**

**Question:**(CO 1) A survey of 128 DeVry statistics students found that 83% read the announcements each week. What is the population and what is the sample?**Question:**(CO 1) The measurements of 100 products from the assembly line show that 99% are correct. Is this percentage a parameter or a statistic and why?**Question:**(CO 1) Classify the data of all the political parties in the world.**Question:**(CO 1) The data set that lists the temperatures in Albany, NY each day in the month of February would be classified as what type of data?**Question:**(CO 1) A data set that includes the shows on a station during the day would … as what type of data?**Question:**(CO 1) A data set that includes the shows on a station during the day would … as what type of data?**Question:**(CO 1) What type of data collection might … best to study how many books students bring into the media center during finals week?**Question:**(CO 1) You need to study the satisfaction of customers of a specific restaurant. You ask every 10 customers as they leave after their meal. This would most closely describe which type of sampling technique.**Question:**(CO 1) Which of the following graphs would be a histogram?**Question:**(CO 1) In a normally distributed data set of how long customers stay in your store, the mean is 44.8 minutes and the standard deviation is 2.6 minutes. Within what range would you expect 95% of your customers to stay in your store?**Question:**(CO 1) Which of the following graphs would be considered right skewed?**Question:**(CO 1) In a normally distributed data set with a mean of 22 and a standard deviation of 4.1, what percentage of the data would be between 13.8 and 30.2?**Question:**(CO 1) Which of the following would be the standard deviation for this sample data set: 5, 7, 3, 9, 2, 4, 4, 9, 5, 9, 3?**Question:**(CO 1) What would be the mean of this data set: 8, 9, 7, 508, 7, 1, 5, 8, 1?**Question:**(CO 1) A political campaign wants to know the public’s reaction to their candidate’s latest policy initiative. What type of study would be best suited to make this determination?**Question:**(CO 1) To gather information on customer satisfaction, a researcher goes into each store and interviews six randomly … customers at each store. This sampling technique is … :**Question:**(CO 1) What is the standard deviation and its meaning in the sample of customer ages? 45, 76, 30, 22, 51, 40, 63, 66, 27**Question:**(CO 2) A random selection from a deck of cards selects one card. What is the probability of selecting a spade?**Question:**(CO 2) What is the sample space to respond to a question whose answers are Up, Down, Left, or Right along with a question on preference between Blue and Red?**Question:**(CO 2) Consider the table below. What is the probability that the next person asked has only one cat?**Question:**(CO 2) Consider the table below. What is the probability that the next person chosen will … in the 30-39 or 40-49 age groups?**Question:**(CO 2) When children roll a die for a game, their probability of rolling a 5 is 17%. This is an example of which type of probability?**Question:**(CO 2) Consider the table below. What is P(40-59’)?**Question:**(CO 2) You are selling your product at a three-day event. Each day, there is a 60% chance that you will make money. What is the probability that you will make money all three days?**Question:**(CO 2) Consider the table below. Find the probability that a randomly … location is in an urban location, given that it is operating a loss.**Question:**(CO 2) Consider the table below. Find the probability that a randomly … product is from the West, given that it is defective.**Question:**(CO 2) Classify these events. Selecting a king from a deck of cards, replacing it, and selecting a queen from the same deck. These events would be considered:**Question:**(CO 2) Classify these events. Some customers purchase lots of items and some customers use shopping carts. These events would be considered:**Question:**(CO 2) In a survey of 352 customers, 81 say that service is poor. You select two customers without replacement to get more information on their satisfaction. What is the probability that both say service is poor?**Question:**(CO 2) Randomly select a customer that lives in a retirement home. Randomly select a customer that is a teenager. Are these events mutually exclusive?

**MATH 221 Week 3 Quiz: Statistics for Decision-Making (v5) **

**Question:**(CO 1) A survey of 385 people who like wild sweaters found that 74% had a wild holiday sweater. What is the population and what is the sample?**Question:**(CO 1) The measurements of 100 products from the assembly line show that 99% are correct. Is this percentage a parameter or a statistic and why?**Question:**(CO 1) Classify the data of the number of customers at a restaurant.**Question:**(CO 1) The data set that lists the runs scored at each.

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