Good credit: The Fair Isaac Corporation (FICO) credit score is 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 720 or more indicating that a person is a very good credit risk. An economist wants to determine whether the mean FICO score is more than the cutoff of 720. She finds that a random sample of 85 people had a mean FICO score of 750 with a standard deviation of 95. Can the economist conclude that the mean FICO score is greater than 720? Use the a= 0.05 level of significance and the P-value method and Excel. (a) State the appropriate null and alternate hypotheses. Ho: H₁ : This hypothesis test is a (Choose one) ▼ test. left tailed right-tailed two tailed

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Q: In the case of research data analysis which one is the best? SD (standard deviation)  or ANOVA?

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A: Formula : Mean = np Standard Deviation  :