Multiple Choice
A population that consists of 500 observations has a mean of 40 and a standard deviation of 15.A sample of size 100 is taken at random from this population.The standard error of the sample mean equals:
A) 2.50.
B) 12.50.
C) 1.343.
D) 1.50.
Correct Answer:
Verified
Correct Answer:
Verified
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