Credit scores are used by banks and other lenders to determine whether someone is a good...

 

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Credit scores are used by banks and other lenders to determine whether someone is a good credit risk. Scores range from 300 to 850, with a score of 730 or more indicating that a person is a good credit risk. An economist finds that a simple random sample of 160 people had a mean credit score of 750 with a standard deviation of 86. Can the economist conclude that the mean credit score is more than 730? Use the a= 0.01 level. a. State the null and alternative hypotheses. Họ: P v 730 v H1: P v 730 v b. Find the critical value and sketch the rejection region. Sketch of Rejection Region: -3 -2 -1 2. 3. -3 -2 -1 2. -3 2 1 0 Critical value(s): (If there are two critical values, list both values separated by a comma) c. Find the test statistic. d. Find the p-value. Credit scores are used by banks and other lenders to determine whether someone is a good credit risk. Scores range from 300 to 850, with a score of 730 or more indicating that a person is a good credit risk. An economist finds that a simple random sample of 160 people had a mean credit score of 750 with a standard deviation of 86. Can the economist conclude that the mean credit score is more than 730? Use the a= 0.01 level. a. State the null and alternative hypotheses. Họ: P v 730 v H1: P v 730 v b. Find the critical value and sketch the rejection region. Sketch of Rejection Region: -3 -2 -1 2. 3. -3 -2 -1 2. -3 2 1 0 Critical value(s): (If there are two critical values, list both values separated by a comma) c. Find the test statistic. d. Find the p-value.

Answer rating: 100% (QA)

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