In: Statistics and Probability
3) Using a calculator, the space below, and the following
dataset: 22 19 23 26 18 22 21 31
(10 points)
A. Compute the sample mean.
B. Compute the sample standard deviation.
C. Compute the sample standard error of the mean.
D. Compute the t-statistic. (Use a known population
mean of 28)
E. What is tcrit? (Use a two-tailed test with =
0.05)
F. What are the Ho and Ha?
G. What do you decide/conclude about this sample?
H. Report the findings in the correct format.
I. If appropriate, calculate the confidence
interval for .