Question

In each part, use the information given to calculate the standard error of the mean. (Round your answers to one decimal place.)

(a) Mean height for a sample of n = 79 women is

x = 64.6

inches, and the standard deviation is s = 3.4 inches.
inches

(b) Mean systolic blood pressure for a sample of n = 90 men is

x = 118,

and the standard deviation is s = 8.


(c) Mean systolic blood pressure for a sample of n = 325 men is

x = 118,

and the standard deviation is s = 8.

Answer 1

Solution:

Standard error of mean is,

= s / n

a)

= s / n

= 3.4 / 79

= 0.4

b)

= s / n

= 8 / 90

= 0.8

c)

= s / n

= 8 / 325

= 0.4