M7-223-Excerise

So for the null

p = _______

B) p > or < _______ (choose greater or less than and then add the same proportion as letter A).

C) Find the standard score of the proportion using this formula

Remember p hat is equal to X/n. P with the zero next to it is your proportion from letter A.

D) What is the p-value? Find the probability that corresponds to your answer in letter C. See examples under section 9.3 in the e-text.

E) What do you conclude? Will you reject or not reject the null and why? You can determine this in two ways, but this way fits the best for this problem. Compare your p-value in letter D to the significance level of .05. If your p-value is less than .05, then you reject the null.

F) State what a type I error would be for this problem in terms of the null and alternative hypotheses and what would happen with the smokers.

G) State what a type II error would be for this problem in terms of the null and alternative hypotheses and what would happen with the smokers.