Let H0: μ≤80 vs H1:µ>80.
We obtain the following result by empirical study:
(1) Calculate the test statistic zcalc
(2) Find p-value for the sample.
(Hint p-value = P(Z>zcalc)=1−P(Z<zcalc), where Z~N(0,1))
(3) Is H0 rejected by the right tailed test for significant level at α=0.05?
Here, is the sample mean, σ is the population standard deviation, and n is the number of samples.
Use the attached table for Z~N(0,1) .