A Nutritionist Wants to Determine Whether People Who Regularly Drink

Essay

A nutritionist wants to determine whether people who regularly drink one protein shake per day have lower cholesterol than people in general.In the general population,cholesterol is normally distributed with μ = 190 and σ = 30.A person who has followed the protein shake regimen for two months is randomly selected,and his cholesterol is 135.The nutritionist reported this result as "p < .01".Is the nutritionist's claim accurate?
a.Use the five steps of hypothesis testing to verify the nutritionist's claim.
b.Explain the result to someone who is familiar with mean,SD,Z scores,normal curve percentages,probability,and samples and populations,but not with hypothesis testing.