Find the value of the test statistic

Assignment Help Basic Statistics

Reference no: EM131797443

According to a study published in the New England Journal o f Medicine, overweight people on lowcarbohydrate and Mediterranean diets lost more weight and got greater cardiovascular benefits than people on a conventional low-fat diet (The Boston Globe, July 17, 2008).

A nutritionist wishes to verify these results and follows 30 dieters on the low-carbohydrate and Mediterranean diets and 30 dieters on the low-fat diet. These data (measured in pounds) can be found on the text website, labeled Different Diets.

a. Set up the hypotheses to test the claim that the mean weight loss for those on low-carbohydrate or Mediterranean diets is greater than the mean weight loss for those on a conventional low-fat diet.

b. Using the appropriate commands in Excel, find the value of the test statistic. Assume that the population variances are equal and that the test is conducted at the 5% significance level. What are the critical value(s) and the rejection rule?

c. At the 5% significance level, can the nutritionist conclude that overweight people on low-carbohydrate or Mediterranean diets lost more weight than people on a conventional low-fat diet?

Reference no: EM131797443

Questions Cloud

Demand to address a predetermined goal : Be clear on what the current market indicates and why and what your future goal is. We will probably revisit some of your choices in future modules.

At the 5 percent significance level what is the conclusion : A consumer advocate researches the length of life between two brands of refrigerators, Brand A and Brand B.

Calculate the indifference point between two cost structures : Calculate the indifference point between the two cost structures, that is, the amount of unit sales that produce exactly the same operating income

Determine the amounts of other comprehensive income : Determine the amounts of other comprehensive income and comprehensive income for 2010. Net income for 2010 is $35,150

Find the value of the test statistic : Find the value of the test statistic. Assume that the population variances are equal and that the test is conducted at the 5% significance level.

Compute the actual return on the plan assets : Erikson Company sponsors a defined benefit pension plan. Compute the actual return on the plan assets in 2010

Post the journal entry and adjusting entry to the accounts : post the journal entry and adjusting entry to the accounts involved and show their balances after adjustments

Find maximum allowable payback and discounted payback : Suppose your firm is considering investing in a project with the accompanying cash flows, that the required rate of return on projects of this risk class.

Market failure to serious environmental harm : Which of the following ways can lead market failure to serious environmental harm?

User Account

All Pages