2. A FICO score is used by credit agencies (such as mortgage companies and banks) to assess the creditworthiness of individuals. Values range from 300 to 850, with a FICO score over 700 considered to be a quality credit risk. The mean FICO score nationwide is 703.5. A credit analyst wondered whether recent college graduates had lower credit scores. She obtained a random sample of 50 recent college graduates and found the sample mean to be 684 with a standard deviation of 92. a) State the appropriate null and alternative hypotheses. b) Verify that the requirements to perform the test using the t-distribution are satistied. c) Draw a t-distribution with the area representing the P-value shaded for this hypothesis test. d) Determine the P-value from (c). e) Interpret the P-value. f) State the conclusion using a 0.05 level of significance. Next > MAY tv