Given a sample size of 18, with sample mean 660.3 and sample standard deviation

95.9, we are to perform the following hypothesis testing:
Null Hypothesis H0 : µ = 700
Research Hypothesis H1 : µ ≠ 700

•What is the test statistics?
•At a 0.05 significance level, what is the critical value in this test? Do we reject the null hypothesis?

Z = (score-mean)/SEm

SEm = SD/√n

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score.