MATH 221 WEEK 3 QUIZ 3.

A survey of  people who like wild sweaters found that % had a wild holiday sweater. What is the population andwhat is the sample? .           A survey of al l  employees at a small company of them like the recent changes to the company’s benefits. Is this percentage a parameter or astatistic andwhy? .           A survey of  of your customers shows that % of them like the recent changes to the product. Is this percentage a parameter or astatistic andwhy? .           The measurements of  products from the assembly line show that % are correct. Is this percentage a parameter or astatistic andwhy? .           Classify the data of all the political parties in the world. .           Classify the data of the number of customers at a restaurant. .           The data set that lists the number of performancesfor each Broadway show in  would be classified as what type of data? a.         Ratio .           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? a.         Interval .           A data set that includes the shows on a station during the day would be classified as what type of data? a.         Nominal .           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? a.         Ratio .           A data set that includes the years in which your hometown team won championships would be classified as what type of data: a.         Interval .           What type of data collection might be best to estimate whether a new medicine is more effective in curing the common cold than aspirin? a.         Experiment .           What type of data collection might be best to estimate how many books individuals read in the past  months? a.         Survey .           What type of data collection might be best to study the effect of a terror attack on a city’s electrical system? a.         Simulation .           What type of data collection might be best to study how voters might decide an upcoming ballot issue? a.         Survey .           You need to study the satisfaction of customers of a specific restaurant.You decide to randomly select one customer at each table. This would most closely describe which type of sampling technique? a.         Stratified .           You need to study the satisfaction of customers of a specific restaurant. You ask every th customer as they leave after their meal.This would most closely describe which type of sampling technique? a.         Systematic .           You need to study the satisfaction of customers of a specific restaurant. You decide to order food andtalk to those customers sitting next to you.This would most closely describe which type of sampling technique? a.         Convenience . Which of the following graphs would be a Pareto chart? . Which of the following graphs would be a line graph? . Which of the following graphs would be a histogram? .              In a normally distributed data set of how long customers stay in your store, the mean is . minutes andthe standard deviation is . minutes.Within what range would you expect % of your customers to stay in your store? . In a normally distributed data set of how long customers stay in your store, the mean is . minutes andthe standard deviation is . minutes.Within what range would you expect % of your customers to stay in your store? 24.  In a normally distributed data set of how long customers stay in your store, the mean is . minutes andthe standard deviation is . minutes. Within what range would you expect % of your customers to stay in your store? 25.  Which of the following graphs would be considered right skewed? 26.  Which of the following graphs would be considered normally 27.  In a normally distributed data set with a mean of  anda standard deviation of ., what percentage of the data would bebetween . and.? .       In a normally distributed data set with a mean of  anda standard deviation of ., what percentage of the data would bebetween . and.? 28.  Which of the following would be the standard deviationfor this sample data set: , , , , , , , , , , ? 29.  hich of the following would be the standard deviationfor this sample data set: , , , , , , , , , , ? 30.  What would be the mean of this data set: , , , , , , , , ? . What would be the mean of this data set: , , , , , , , , ? . What would be the mean of this data set: , , , , , , , , ? .. A pharmaceutical company wants to determine if its new medicine helps heal bruises more quickly than not treating the bruise.What type of study wouldbe best suited to make this determination? 15.     A political campaign wants to know the public’s reaction to their candidates latest policy initiative. What type of study would be best suited to make this determination? 16.     To gather information on customer satisfaction, a researcher goes into each store andinterviews six randomly selected customers at each store. This sampling technique is called: 16.  To gather information on customer satisfaction, a researcher goes into the local store andinterviews six randomly selected customers. This sampling technique is called: 16.  To gather information on customer satisfaction, a researcher goes into several stores andinterviews randomly selected customers. This sampling technique is called: 17.  What is the standard deviation andits meaning in the sample of customer ages? , , , , , , , , 17.  What is the standard deviation andits meaning given this population of customer ages? , , , , , , , , 18.  A random selection from a deck of cards selects one card. What is the probability of selecting an ace? 18.  A random selection from a deck of cards selects one card. What is the probability of selecting 19.  What is the sample space to responses to a question whose answers are Up, Down, Left, or Right along with a question on preferencebetween Blue andRed? 19.  What is the sample space of flipping three coins, where H=heads, 20.  Consider the table below 20.  What is the probability that the next person asked has only two cats? . What is the probability that thenext person asked has no 20.  What is the probability that the next person asked has only 21.    Consider the table below . What is the probability that the next person chosen will be in the - or - age 21.  What is the probability that the next person chosen will be in the - or - age 22.  Based on the CEO’s perception, a company estimates that a new product will be purchased by % of current customers. This is an example of which type of probability? a.     Subjective probability 22.  According to company records, the probability that a dishwasher will need repairs during its first six years is .. This is an example of which type of probability? 22.  Based on past experience, it is estimated that a restaurant will serve  guests on a weekday evening. This is an example of which type of probability? 23.  Consider the table below. Age Group Frequency - - - - -  andover . What is P(-’)? . What is P(-’)? 24.  You are selling your product at a three-day event. Each day, there is a % chance that you will make money. What is the probability that you will make money on the first day andlose money on the second day, andmake money on the third? 24.  You are selling your product at a three-day event. Each day, there is a % chance that you will make money. What is the probability that you will make money on the first two days andlose money on the third day? 25.  Consider the table below. Profit Loss Total Urban location Rural location Total . Find the probability that a randomly selected location is going to be profitable, given that it is in a rural location. a. .% . Find the probability that a randomly selected location is in a rural location, given that it is 25.  Find the probability that a randomly selected location is going to be profitable, given that it is in an 26.    Consider the table below. . Find the probability that a randomly selected product is defective, given that it is from the South production facility. 26.  Find the probability that a randomly selected product is defective, given that it is from the East 27.  Classify these events. Selecting a king from a deck of cards, keeping it andselecting a queen from the same deck. These events would be considered: 27.  Classify these events. Selecting a king from a deck of cards, keeping it andselecting another king from the same deck. These events would be considered: 28.  Classify these events. A study found that people who suffer from stress are more likely to have health issues. These events would be considered: 28.  Classify these events. Some businesses paint the outside of their buildings red while some businesses offer employees health benefits. These events would be considered: 29.  In a survey of  customers,  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? 30.   In a survey of  customers,  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? 29.  Randomly select a customer that lives in a retirement home. Randomly select a customer that is a teenager. Are these events mutually exclusive? 30.  Randomly select a customer that purchases tofu. Randomly select a customer that purchases chicken. Are these events mutually exclusive?