Question

1) The management of Super Save Grocery Mart is consider adopting Apple Pay. It would require some investment; they will do this only if they strongly believe that more than 10% of their customers would use Apple Pay if available. They survey 300 customers; 42 customers state they would use Apple Pay.  Perform a hypothesis test to determine whether Super Save Grocery Mart should invest in adopting Apple Pay. Using a 1% level of significance, do more than 10% of customers use Apple pay?

2)  At Dessie’s Dress shop, customers complain that fashion designers assume that all women are tall when they design clothes. Dessie read that the designers whose clothes she carries tend to design for women who are 5 feet 6 inches (66 inches) tall. Because of her customers comments, Dessie wants to determine whether the average height of her customers is shorter. A random sample of 25 customers has an average height of 64 inches with standard deviation 2.7 inches. Perform a hypothesis test to determine if the average height of all Dessie 's customers is less than 66 inches. Use a 2% level of significance

Answer 1