Question

Can you help me

Answer 1

Investigators are interested in whether a new diet lowers total cholesterol in a group of individuals. They take a sample of 31 participants on the new diet. They know that the mean cholesterol level of the general population (µ) is 200 mg/dL, but they do not have information on the standard deviation of the population. The mean total cholesterol level in their sample of participants is 196 mg/dL and their sample has a standard deviation of 8 mg/dL.

Your research question of interest is:

Does the population of people on a new diet have a different mean cholesterol level than the general population?

You will use the information above for several of the following questions.

Answer 2

Use the data above examining the research question of interest: "Does the population of people on a new diet have a different mean cholesterol level than the general population?"



What is the t-statistic associated with your test? (rounded to the nearest hundredth)

Select one:
A. -2.03
B. 1.56
C. -2.78
D. -3.48
E. -1.27

Answer 3

@kropot72