Consumers with credit scores below 600 have a very difficult time getting approved for car or mortgage loans. In 2017, 30% of Americans had a credit score below 600. The Federal Reserve Bank of New York regularly monitors credit scores to judge the health of the U.S. economy. Because household debt levels reached a new record in the first quarter of 2018, with $13.21 trillion, the Federal Reserve is concerned that this proportion has increased. To test this hypothesis, a random sample of 250 Americans was chosen in 2018. From this sample, 85 people had credit scores less than 600. Using α = 0.10, answer the following questions:

a. Does this sample provide support for the government’s concern that the proportion of Americans with credit scores below 600 has increased since 2017?

b. Determine the p-value for this test.