Question: (*) A random sample of 20 observations produced a sample mean of ????????= 92.4 and s = 25.8. What is the value of the standard

(*) A random sample of 20 observations produced a sample mean of ????????̅= 92.4 and s = 25.8. What is the value of the standard error of ????????̅?

a. 4.6

b. 15.9

c. 1.3

d. 5.8

e. 2.6

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