Instructions Specify the critical region and calculate the test statistic based
ID: 3230605 • Letter: I
Question
Instructions Specify the critical region and calculate the test statistic based on data in the table below:(0) In problem 1, calculate the P-value and make a decision based on the critical region and/or the P-value.(0) In problem 1, change the alternative hypothesis to Ha: mu notequalto 75. Re-specify the critical region, calculate the P-value. and make a decision.(0) Use data in problem 1 to construct a 95% confidence interval for mu. Use this confidence interval to justify your decision in problem 3.(0)Explanation / Answer
One-Sample T
Test of = 75 vs < 75
N Mean StDev SE Mean 95% Upper Bound T P
64 72.70 8.60 1.08 74.49 -2.14 0.018
P-value <0.05 we reject the null hypothesis.
One-Sample T
Test of = 75 vs 75
N Mean StDev SE Mean 95% CI T P
64 72.70 8.60 1.08 (70.55, 74.85) -2.14 0.036
P-value <0.05 we reject the null hypothesis.
4. 95% CI (70.55, 74.85)