Question 638192
Two Tailed Test
H0: µ = 60
H1: µ ≠ 60

z Test
Test Statistic, z: 1.6667
Critical Value :        ±1.96
SE(M) = 3
P-Value:           0.0956



Fail to Reject the Null Hypothesis because the p-value is greater than 0.05.
Sample does not provide enough evidence to conclude that the treatment has a significant effect.




z Test
IF SAMPLE SIZE WAS CHANGED TO N =16 THEN
Test Statistic, z: 1.3333
Critical Value:        ±1.96
SE(M) =  3.75
P-Value:           0.1824

SAME DECISION AS ABOVE BECAUSE THE P-VALUE IS GREATER THAN 0.05.