Questions from Statistics

Q: The table shows the percentage of all men and women in the

The table shows the percentage of all men and women in the United States aged 18 to 44 who meet aerobic fitness guidelines. Give two reasons why a chi-square test is not appropriate for this data. (So...

Q: The table shows the percentage of all U.S. households

The table shows the percentage of all U.S. households who are food secure, have low food security, or who have very low food security. The data are reported by area of residence. Give two reasons why...

Q: Some software (such as SPSS) requires that ANOVA data be

Some software (such as SPSS) requires that ANOVA data be stacked and coded. Some software works with both stacked and unstacked data, and some (such as the TI-84) requires unstacked data. Go back to t...

Q: Go back to the information in exercise 11.19. Assuming

Go back to the information in exercise 11.19. Assuming the conditions for ANOVA are met, test the hypothesis that the mean number of hours of schoolwork varies by class, reporting the p-value and conc...

Q: Go back to the information in exercise 11.20. Assuming

Go back to the information in exercise 11.20. Assuming the conditions for ANOVA are met, test the hypothesis that the mean number of hours of TV varies by class, reporting the p-value and conclusion....

Q: Pulse rates were taken for five people, each in three different

Pulse rates were taken for five people, each in three different situations: sitting, after meditation, and after exercise. Explain why it would not be appropriate to use one-way ANOVA to test whether...

Q: A survey was given to StatCrunch users on the length of time

A survey was given to StatCrunch users on the length of time for commuting and the method of commuting. Assume this is a random sample. Minitab output for one-way ANOVA is given, along with the means...

Q: The table shows the heights (in inches) of all the

The table shows the heights (in inches) of all the basketball players on the 2017–2018 Santa Clara University basketball team. Explain why it would be inappropriate to do a t-test wi...

Q: Construct two sets of body temperatures (in degrees Fahrenheit, such

Construct two sets of body temperatures (in degrees Fahrenheit, such as 96.2 °F), one for men and one for women, such that the sample means are different but the hypothesis test shows the population m...

Q: Construct heights for 3 or more sets of twins (6 or

Construct heights for 3 or more sets of twins (6 or more people). Make the twins similar, but not exactly the same, in height. Put all of the shorter twins in set A and all of the taller twins in set...