Question

SCC Library150545866707462Test ScoresUse the Empirical Rule to answer the following questions.a. The mean isb. The standard deviation is% of the test scores are between 58 and 66.d.% of the test scores are between 54 and 70e.% of the test scores are between 50 and 74.f.% of the test scores are between 62 and 66.9.% of the test scores are less than 62h.% of the test scores are less than 66.Check Answer

Answer 1

a. Mean = (50+54+58+66+70+74+62)/ 7 = 62

b. Standard deviation is

c. Between 58 and 66 , are 68.3%

d. Between 54 and 70, are 34%

e. Between 62 and 66, Is 34%

f.