I will give you 5 stars, and pick you as the brainiest, whoever solves with all steps. Stats A simple random sample of FICO scores is listed below. The mean FICO score is reported to be 678. Assuming that the standard deviation of all FICO scores is known to be 58.3, use a 0.01 significance level to test the claim that these sample FICO scores come from a population with a mean equal to 678. DATA: 714, 751, 664, 789, 818, 779, 698, 836, 753, 834, 693, 802.