1. Consider a football team for whom the numbers on the active players’ jerseys are 29, 41, 50, 58, 79,…, 10 (listed in alphabetical order of players’ names). Does it make sense to calculate the means of those numbers?
Why are why not?
No because it doesn’t make sense to calculate jersey numbers but stats maybe
2. The Fair Isaac Corporation (FICO) credit rating scores obtained in a simple random sample are listed below: 714 751 664 789 818 779 698 836 753 834 693 802
a. Find mean, median, mode, and midrange.
714+ 751+ 664+ 789+ 779+ 698+ 836+ 753+ 834+ 693+ 802= 9131
Mean 760.9
Median 766
Mode 0
Midrange 766

b. As of this writing, the reported mean FICO score was 678. Do these sample FICO scores appear to be consistent with the reported mean?
No it was much higher
3. A student earned grades of 92, 83, 77, 84, and 82 on her five regular tests. She earned grades of 88 on the final exam and 95 on her class projects. Her combined homework grade was 77. The five regular tests count for 60% of the final grade, the final exam counts for 10%, the project counts for 15%, and homework counts for 15%. What is her weighted mean grade?
Grades 92+ 83+ 77+ 84+ 82/ 5 = 83.6
Regular grades 83.6 x0.60= 50.16
Final exam 88 x 0.10 = 8.8
Class project 95 x 0.15 = 14.25
Homework 77 x 0.15 = 11.55
Her weighted mean grade is 84.71

4. Bao Xishun is the world’s tallest man with a height of 92.95 in. (or 7 ft. 8.95 in.). Men have heights with a mean of 69.6 in. and a standard deviation of 2.8 in.
a. Convert Bao’s height to a z-score.
Z= (92.95 - 69.6) / 2.8
Z= 8.33 b. Does Bao’s height meet the criterion of being unusual by corresponding to a z-score that does not fall between -2 and 2?
No it was