Question

5. A history test has a mean of 100 and a standard deviation of 10. Find the z-score for the test score 130. (5 points) Gientb, ind the allovings (5 points each) 18 27 21 42 38 25 30 35 17 40 28 20 a. The percentile rank of 28. b. The score that corresponds 80* percentile. 7. (10 points each) a. Given the data below , Use the b. Construct the box plot of the data outliner procedure to determinedata below and determine how if 6 is an outliner. 6 32 38 42 48 50 28 17 10 24 15 26 13 You must show work! the distribution is skewed.

Answer 1

5)

Given,

Mean $\mu$ = 100, standard deviation $\sigma$ = 10

Z-score = X - $\mu$ / $\sigma$

= 130 - 100 / 10

Z - score = 3