Question

33. Suppose your group would like to do a research about the quality of sleeping on doing exercises,
and you believe that the quality of sleeping will significantly be improved if a person has regular
exercises habit. A study is conducted of a random sample of 16 participants who has not been
exercised for more than 40 days. The duration for the study is 25 days, and each participant needs
to do exercise 30 minutes every day. During the 36 days, the average total sleeping hours increased
10 minutes, with the standard deviation is 8. Could we conclude that the quality of sleeping is
significantly affected by doing exercises?

a) Parametric or nonparametric hypotheses?
b) Z distribution, t distribution, chi-square test or hypothesis test of a proportion
c) Please indicate the null hypotheses.
d) Please indicate the alternative hypotheses
e) Please calculate the stand error? (If it is a chi-square test, type NA for this question)
f) If z table will be used, type NA for this question. If t table will be used, indicate the degree of
freedom.
g) Please calculate the statistical value.
h) Hypothesis is supported or no supported, and what is your conclusion?

Answer 1