# Question: Refer to the same data from Exercise 2 Use a

Refer to the same data from Exercise 2. Use a 0.05 significance level with the Wilcoxon signed-ranks test to test the claim that differences between fares for flights scheduled 1 day in advance and those scheduled 30 days in advance have a median equal to 0. What do the results suggest?

Use a 0.05 significance level with the indicated test. If no particular test is specified, use the appropriate nonparametric test from this chapter.

Use a 0.05 significance level with the indicated test. If no particular test is specified, use the appropriate nonparametric test from this chapter.

## Answer to relevant Questions

Refer to the following ages at inauguration of the elected presidents of the United States (from Data Set 12 in Appendix B). Test for randomness above and below the mean. Do the results suggest an upward trend or a downward ...Refer to the preceding exercise and use only the skull breadths from 4000 B.c. and 150 A.D. Use the Wilcoxon rank-sum test with a 0.05 significance level to test the claim that the two samples are from populations with the ...Refer to the prices and ranks from the preceding exercise. Use a 0.05 significance level to test for a correlation between price and rank. After finding the values of the mean and range for each year, find the values of x, and R. Then find the values of LCL and UCL for an R chart and find the values of LCL and UCL for an x chart. Refer to the amounts of energy ...Engineers must consider the breadths of male heads when designing motorcycle helmets. Men have head breadths that are normally distributed with a mean of 15.2 cm and a standard deviation of 2.5 cm (based on anthropometric ...Post your question