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Suppose that, based on a sample, the 95%% confidence interval for the mean of a population is (21,37). What is the value of s/√n?
A.4
B.3
C.5
D.2

Respuesta :

MathPhys

Answer:

A. 4

Step-by-step explanation:

s/√n is the sample standard deviation.  95% is approximately between ±2 standard deviations, so the ends of the interval are 4 standard deviations apart.

s/√n = (37 − 21) / 4

s/√n = 4

madison3395

Answer:

A.4

Step-by-step explanation:

Based on a sample, the 95%% confidence interval for the mean of a population is (21,37). Therefore, the value of s/√n is 4.

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