Question 1081149
Ho: mu=33
Ha: mu NE 33
alpha 0.01
test statistic is a t (df=74, 0.995)= (xbar-mu)/s/sqrt (n)
critical value is |t|> 2.64
t=2.7/11.4/sqrt(75)=2.7*sqrt (75)/11.4=2.05
p=0.044
Fail to reject Ho, at the 1% level, there is no significant evidence to support the claim that the mean age is not 33.