1. If a customer is selected based on this survey data, what is the probability that the customer is female or does not use aniPhone?

   0.134

   0.709

   0.828

   0.575

5 points

QUESTION 9

1. A survey of 134 cell phone users yielded the data found in the table below. The table compares gender and type of phone. If 3 customers are independently selected based on this survey information what is the probability that none of the 3 haveiPhone? (Round your answer to 3 decimal places)

   0.611

   0.918

   0.971

   0.029

5 points

QUESTION 10

1. A survey of 134 cell phone users yielded the data found in the table below. The table compares gender and type of phone. True or False: The event of having an iphone is independent of gender.

   True

   False

5 points

QUESTION 11

1. An automobile dealer has taken a survey of 500 drivers. The drivers were classified as Young (ages 16-30) and Old (ages 31 or older), and according to their vehicle preference (SUV or Compact). The results of the survey are summarized in the following table: If a randomly selected driver in this survey is "old," what is the probability that the driver will have a preference for SUVs? (Round your answer to 4 decimal places.)

   .1400

   .3182

   .4667

   .6818

   .2857

5 points

QUESTION 12

1. An automobile dealer has taken a survey of 500 drivers. The drivers were classified as Young (ages 16-30) and Old (ages 31 or older), and according to their vehicle preference (SUV or Compact). The results of the survey are summarized in the following table: Based on this data, which conclusion is accurate?

   80% of the young drivers prefer compacts.

   80% of the drivers are young and prefer compact cars.

   Among the drivers who prefer compacts, more than 50% are old.

   The data indicate that age and vehicle preference are independent.

   The data indicate that age and vehicle preference are not independent.

5 points

QUESTION 13

1. At Mid-State University, 10% of the student body are scholarship athletes. Half of the athletes are male and half are female. Of the students that are not athletes, 57% are female and 43% are male. What is the proper probability notation for the statement "half of the athletes are male"?

   P(athletes and male)

   P(male | athletes)

   P(athletes | male)

   P(athletes or male)

5 points

QUESTION 14

1. At Mid-State University, 10% of the student body are scholarship athletes. Half of the athletes are male and half are female. Of the students that are not athletes, 57% are female and 43% are male. From the information given, find the percentage of all females at Mid-State University that are athletes.

   57.0%

   8.9%

   10%

   56.3%

5 points

QUESTION 15

1. Based on past performance, a bank manager knows that an error is made in 5% of all transactions performed by the tellers. Among the transactions which have an error, 80% are made on customers who have commercial accounts. If one transaction is selected at random on a given day, what is the probability that the transaction has an error and that the customer has a commercial account?

   0.15

   0.85

   0.04

   0.80

5 points

QUESTION 16

1. Based on past performance, a bank manager knows that an error is made in 5% of all transactions performed by the tellers. Among the transactions which have an error, 80% are made on customers who have commercial accounts. The manager has selected 100 transactions from a particular day that she will examine for errors. She decides that if the first 4 transactions that she examines have no error, she will discontinue the audit. If 5% of the 100 transactions the manager selected have an error, what is the probability that the first 4 transactions that are examined do not have an error? (Round your answer to 3 decimal places.)

   0.200

   0.999

   0.185

   0.815

5 points

QUESTION 17

1. Based on past performance, a bank manager knows that an error is made in 5% of all transactions performed by the tellers. Among the transactions which have an error, 80% are made on customers who have commercial accounts. The manager has selected 100 transactions from a particular day that she will examine for errors. She decides that if the first 4 transactions that she examines have no error, she will discontinue the audit. If 5% of the 100 transactions the manager selected have an error, what is the probability that the at least 1 of the first 4 transactions that are examined has an error?

   0.815

   0.0001

   0.800

   0.185

5 points

QUESTION 18

1. The personnel manager of a large corporation gives an aptitude test to all newly-hired employees in an attempt to determine their potential for a management position. Based on past results, the personnel manager knows that 70% of the new employees pass the test (P) and the remaining 30% of the new employees fail the test (F). Among the new employees who pass the test, 25% will end up in a management position (M) within one year, while the other 75% will never reach a management position. Among the new employees who fail the test, 10% will end up in a management position within one year, and the remaining 90% will never reach a management position. Among all newly-hired employees who take the aptitude test, what percentage will fail the test and reach a management position within one year?

   3%

   40%

   65%

   10%

   31%

5 points

QUESTION 19

1. The personnel manager of a large corporation gives an aptitude test to all newly-hired employees in an attempt to determine their potential for a management position. Based on past results, the personnel manager knows that 70% of the new employees pass the test (P) and the remaining 30% of the new employees fail the test (F). Among the new employees who pass the test, 25% will end up in a management position (M) within one year, while the other 75% will never reach a management position. Among the new employees who fail the test, 10% will end up in a management position within one year, and the remaining 90% will never reach a management position. If an employee who has been at the company for more than one year is selected at random and the employee is not in a management position, what is the probability that the employee passed the aptitude test? (Round your answer to 3 decimal places.)

   .660

   .440

   .943

   .787

   .525

5 points

QUESTION 20

1. The personnel manager of a large corporation gives an aptitude test to all newly-hired employees in an attempt to determine their potential for a management position. Based on past results, the personnel manager knows that 70% of the new employees pass the test (P) and the remaining 30% of the new employees fail the test (F). Among the new employees who pass the test, 25% will end up in a management position (M) within one year, while the other 75% will never reach a management position. Among the new employees who fail the test, 10% will end up in a management position within one year, and the remaining 90% will never reach a management position. What percentage of all employees will end up in a management position within one year? (Round to 2 decimal places.)

   35.00%

   38.00%

   17.50%

   2.50%

   20.50%