A simple random sample of FICO credit rating score is obtained, and the score are listed below. As of this writing , the mean FICO score was reported to be 678. Assuming that the standard deviation of all FICO score is know to be 56.3, use 0.05 significance level to test the claim that this sample FICO scores come from a population with a mean equal to 678. 714 751 664 789 818 779 698 836 753 834 693 802
Identify :
null hypothesis
alternative hypothesis
test statistic:
P-value or critical values:
Conclusion about the null hypothesis:
Final conclusion that addresses the original claim: