Exhibit 9-6 a Random Sample of 100 People Was Taken. Eighty of Eighty

Essay

Exhibit 9-6
A random sample of 100 people was taken. Eighty of the people in the sample favored Candidate A. We are interested in determining whether or not the proportion of the population in favor of Candidate A is significantly more than 75%.
-A fast food restaurant is considering a promotion that will offer customers to purchase a toy featuring a cartoon movie character. If more than 20% of the customers purchase the toy, the promotion will be profitable. A sample of 50 restaurants is used to test the promotion.
a.State the hypotheses associated with the restaurant's test.
b.Describe a Type I error for this situation.
c.Describe a Type II error for this situation.