Read this section and answer the questions that follows:

You were told that the average number of calories in a low-calorie meal is 450.Your friend started making low-calorie meals at her restaurant.You took a sample of 27 such meals and the mean for these meals is 440 and the standard deviation is 22 calories.You want to test the hypothesis that the average for this sample is different from the national average.Use =.05.

What is the value of the test statistic in this situation?

d. 07407

a. -1.851852

b. 1.851852

c. -2.361887

Should the t-test be used in this situation?

(yes or no)

What is the rejection region in this situation?

e. z>1.645

a. less than -2.055529 and greater than 2.055529

b. less than -1.70562

d. less than -1.96 and greater than 1.96

c. less than -2.0638986 and greater than 2.0638986

The decision is made that the average for this sample is different from the national average. Knowing this, do you accept or reject the null hypothesis?

b. Accept the null hypothesis (HO)

a. Reject the null hypothesis (H0)

Should you reject the null hypothesis in this situation?

(yes or no)

What is the alternative hypothesis for this situation?

d. <440

b. <450

c. >450

a. 450

e. 440

What is the rejection region for this situation?

d. greater than 2.055529

c. less than -2.055529 and greater than 2.055529

b. greater than 1.70562

a. less than -1.70562

What is the 95% confidence interval for the population mean in this situation?

d. None of the above

b. (431.7017,448.2983)

c. (431.3128,448.6872)

a. (431.2971,448.7029)