Questions from Business Statistics

Q: The Bureau of Transportation Statistics of the U.S. Department

The Bureau of Transportation Statistics of the U.S. Department of Transportation reports statistics about airline performance. For September 2018 they report the following number of bags lost per 1000...

Q: A student runs an experiment to test how different factors affect her

A student runs an experiment to test how different factors affect her bowling performance. She uses 3 levels for the weight of the ball (low, medium, and high) and 2 approaches (standing and walking),...

Q: A student runs an experiment to test how different factors affect his

A student runs an experiment to test how different factors affect his reaction time while playing video games. He uses a specified race course with random hazards and times how long it takes him (in s...

Q: Here are the prices (in cents per pound) of bananas

Here are the prices (in cents per pound) of bananas reported from 15 markets surveyed by the U.S. Department of Agriculture. 1. Display these data with an appropriate graph. 2. Report appropriate summ...

Q: Results of a 1996 American Medical Association report about the infant mortality

Results of a 1996 American Medical Association report about the infant mortality rate for twins carried for the full term of a normal pregnancy are shown on the next page, broken down by the level of...

Q: The boxplots display the heights (in inches) of 130 members

The boxplots display the heights (in inches) of 130 members of a choir by the part they sing. 1. It appears that the median height for sopranos is missing, but actually the median and the upper quarti...

Q: In a study of dialysis, researchers found that of the three

In a study of dialysis, researchers found that of the three patients who were currently on dialysis, 67% had developed blindness and 33% had their toes amputated. What kind of display might be appropr...

Q: Recall that the beef cattle described in Exercise 29 had a mean

Recall that the beef cattle described in Exercise 29 had a mean weight of 1152 pounds, with a standard deviation of 84 pounds. 1. Cattle buyers hope that yearling Angus steers will weigh at least 1000...

Q: Beanstalk Clubs are social clubs for very tall people. To join

Beanstalk Clubs are social clubs for very tall people. To join, a man must be over 6²2³ tall, and a woman over 5²10³. The National Health Survey suggests that heights of adults may be Normally distrib...

Q: A ceramics factory can fire eight large batches of pottery a day

A ceramics factory can fire eight large batches of pottery a day. Sometimes a few of the pieces break in the process. In order to understand the problem better, the factory records the number of broke...