Scenario A: Records for the past several years show that 49% of customers at a local game shop use a customer loyalty card. Due to a recent promotion of the cards, the manager wants to know if the percentage has increased. The manager decides to take a simple random sample of 150 customers and finds that 81 of them used the customer loyalty card at their last transaction. :: 1.23 l Scenario B: According to national health tables. the average height of 6-year-old boys is approximately 115 cm with an SD of 3 cm. The nurse at a local school district takes a simple random sample of 45 6-year-old boys in the district and calculates an average height of 115.5 cm. Is this evidence that boys in this school district are, on average, taller than the national average? ': 115 H 1.11 Scenario 0: A tire manufacturer claims that its tires last an average of 60,000 miles with an SD of 3,000 miles. A consumer protection group takes a sample of 64 tires to test them and finds a sample average lifetime of 58,700 miles. Use this information to test the manufacturer claim. Scenario D: At a large university, 23% of the students are married. A student organization selects a random sample of 400 graduate students at this university to participate in a survey and finds that 110 of them are married. Is this evidence that the percentage graduate students who are married is higher than 23%