Questions from Statistics

Q: Suppose you had to identify the color of ink for a series

Suppose you had to identify the color of ink for a series of printed words, but the printed word appeared in a color of ink that did not match the name of the color. For example, if you were shown &ac...

Q: In the past, some people believed it was easier to read

In the past, some people believed it was easier to read words printed on colored paper than words printed on white paper, while other people believed it was easier to read words printed on white paper...

Q: Students in a statistics class were asked to measure their resting pulse

Students in a statistics class were asked to measure their resting pulse rates. After that, the instructor unexpectedly screamed and ran from one side of the class to the other. Students again measure...

Q: Refer to exercise 13.19. This time, the data

Refer to exercise 13.19. This time, the data (beats per minute) came from female students before and after the scream. Perform a sign test to see whether the pulse rate went up significantly, using a...

Q: A random sample of the ages of 14 brides and their grooms

A random sample of the ages of 14 brides and their grooms showed that in 10 of the pairs the grooms were older, in 1 pair they were the same age, and in 3 pairs the bride was older. Perform a sign tes...

Q: A student was interested in comparing textbook prices at two universities.

A student was interested in comparing textbook prices at two universities. She matched the textbooks by subject and compared prices from the University of California at Santa Barbara (UCSB), which is...

Q: Is there a correlation between state and federal spending on education?

Is there a correlation between state and federal spending on education? The following output shows the regression analysis on state and federal spending on education from a sample of states. Assume th...

Q: Do movies with bigger budgets tend to make more money? The

Do movies with bigger budgets tend to make more money? The following output shows the regression analysis on movie budgets and box office gross (how much money the movie made) for a sample of movies r...

Q: Each of 29 randomly sampled community college students reported the number of

Each of 29 randomly sampled community college students reported the number of years of formal education for his or her mother and father. For example, a value of 12 means that the parent completed hig...

Q: Refer to exercise 14.17 and the output given.

Refer to exercise 14.17 and the output given. a. Identify the slope. Explain what it would mean if the slope were 0. b. Test the hypothesis that the slope is 0 using the output. Show all the steps, an...