Suppose that a company claims that their mean weekly sales are $12,250. A random sample of 35 weeks yields a sample mean of x = $9,575, with a sample standard deviation of s = $1,250.
Given that the pair of hypothesis that correspond to the claim are:
Ho:μ = 12,250
H1:μ is not = to 12,250
Find the critical values for the hypothesis test. Assume that the significance level is a = 0.05.