From the given data :
Mean =72
S.D = 5
Sample size = 17
a) mean of sampling distribution =72
b)Standard error formula ==
Thus, standard error
= 5 / sqrt (17)
= 1.21
#c)
To plot the graph:
Upper 95% limit and
Lower 95% limit
Thus, the limits are:
Upper limit =69.6
Lower limit = 74.4
#option c is correct
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