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

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

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.

that is the sum

step-by-step explanation:

there are no other answers without knowing the variables values

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11-1 > 1-1+a

-12 > a