Discussion:
Q: The observed time that 20 individuals spend standing and walking per day is reported in the following table:
Group n Mean Std. dev
Group 1 (lean) 10 525.751 107.121
Group 2 (obese) 10 373.269 67.498
(a) Test the null hypothesis that there is no difference in mean time per day spend standing or walking between the two groups against a two sided alternative at 0:01 significance. Report your test statistic, a bound for your p-value, and your conclusions regarding the null hypothesis.
(b) Verify your results with an appropriate confidence interval. Does this confidence interval support your conclusions in part (a)?