Question: Use the electric.sav data file to answer the following questions:

Use the Select Cases facility to select only men with coronary heart disease (variable chd equals 1). Test the hypothesis that they come from a population in which the average serum cholesterol is 205 mg/dl (variable chol58).

a. State the null and alternative hypotheses.

b. What do you conclude about the null hypothesis based on the t test?

c. What is the difference between your sample mean and the hypothetical population value?

d. How often would you expect to see a sample difference at least this large in absolute value if the null hypothesis is true?

e. Give a range of values that you are 95% confident include the population value for the mean cholesterol of men with coronary heart disease. Does that interval include your test value of 205?

f. What is the range of values that you are 95% confident include the true difference between 205 and the average cholesterol for the population of men with coronary heart disease?