Questions from Statistics

Q: Use the data given in exercise 11.36. Follow the

Use the data given in exercise 11.36. Follow the instructions given in exercise 11.43. Data from 11.36:

Q: Following the large-scale nuclear power plant failure in Japan,

Following the large-scale nuclear power plant failure in Japan, a StatCrunch survey was conducted in which respondents were asked about their level of concern over nuclear power and their political pa...

Q: A StatCrunch survey asked respondents how much time they spent daily on

A StatCrunch survey asked respondents how much time they spent daily on various social media sites. Is there a difference in the mean time spent on these social media sites? Use the following ANOVA ou...

Q: A random sample of 10 independent healthy people showed the following body

A random sample of 10 independent healthy people showed the following body temperatures (in degrees Fahrenheit): 98.5, 98.2 99.0, 96.3, 98.3, 98.7, 97.2, 99.1, 98.7, 97.2 Test the hypothesis that the...

Q: Minitab output is shown for a two-sample t-interval

Minitab output is shown for a two-sample t-interval for the number of televisions owned in households of random samples of students at two different community colleges. Each individual was randomly ch...

Q: Using data from NHANES, we looked at the pulse rate for

Using data from NHANES, we looked at the pulse rate for nearly 800 people to see whether it is plausible that men and women have the same population mean. NHANES data are random and independent. Minit...

Q: The table shows the Minitab output for a two-sample t

The table shows the Minitab output for a two-sample t-test for the number of televisions owned in households of random samples of students at two different community colleges. Each individual was rand...

Q: Using data from NHANES, we looked at the pulse rates of

Using data from NHANES, we looked at the pulse rates of nearly 800 people to see whether men or women tended to have higher pulse rates. Refer to the Minitab output provided. a. Report the sample mean...

Q: In exercise 9.63 you could not reject the null hypothesis

In exercise 9.63 you could not reject the null hypothesis that the mean salary for the two leagues are the same, using a two-tailed test with a significance level of 0.05. a. If you found a 95% confid...

Q: Triglycerides are a form of fat found in the body. Using

Triglycerides are a form of fat found in the body. Using data from NHANES, we looked at whether men have higher triglyceride levels than women. a. Report the sample means, and state which group had th...