3. Sweet Holes Donut Shop wished to increase the percentage of the adult population who are familiar with their business. Prior to launching an advertising campaign, a random sample of 80 adults contained 48 who were familiar with their business. One month after the advertising campaign, a random sample of 70 adults contained 52 people who were familiar with their business. Was the advertising campaign effective? To answer this question, perform an appropriate hypothesis test using the p-value method and a 5% significance level. Comment on the validity of the testing procedure