1. Assume you have the following results from sample data:

S = 30, n = 64, and sample mean = 218.

Conduct a two-tailed hypothesis test for

H0: =200 at the 0.05 significance level.

1. A researcher hypothesizes that 15 percent of the people in a test-market will recall seeing a particular advertisement. In a sample of 1,200 people, 20 percent say they recall the ad. Perform a hypothesis test.