Instructions:

1. The side effects of a new drug are being tested against a placebo. A simple random sample of 565 patients yields the results below. At a significance level of a = 0.10, is there enough evidence to conclude that the treatment is independent of the side effect of nausea?

Result Drug Placebo Total

Nausea 36 13 49

No nausea 254 262 516

Total 290 275 565

a. The null hypothesis Ho:

b. The alternative hypothesis Ha:

c. The level of significance a =

d. The degrees of freedom:

e. The test statistic:

f. The critical value:

g. Decision: