Prior to the virus outbreak in Maine, a pound of flour cost 75 cents. You sample 112 grocery stores and find that the average cost is X-bar = 88 9 cents. You want to see if this is significantly...

Extracted text: Prior to the virus outbreak in Maine, a pound of flour cost 75 cents. You sample 112 grocery stores and find that the average cost is X-bar = 88 9 cents. You want to see if this is significantly higher than the cost before the outbreak, so you test the following hypotheses: Ho: u s 75 and Ha: u > 75. What is the standard error of the mean? Round your answer to three decimal places. In this cents with a standard deviation s = problem, do not convert the cents to decimal format.