4.28 Working backwards, two-sided:  You are given the following hypotheses:

H₀: μ = 30
H_a: μ ≠ 30 We know that the sample standard deviation is 10 and the sample size is 70. For what sample mean would the p-value be equal to 0.05? Assume that all conditions necessary for inference are satisfied.


The sample mean should be at most or at least (please round each answer to two decimal places)