A sample of n=23 observations is drawn from a normal population with μ=960 and σ=160. Find each of the following:
A. P(X¯>1013)
I have a general idea of how to get the z- score, but am having
trouble moving forward from there.
Given
observations from a normal population with μ=960 and σ=160. We need
to find,
.
The mean of the sample mean
. The standard deviation of the sample mean is
.
We compute the probability by converting to Z-score.
The probability,
I assume X¯ stands for
. Otherwise you have to drop
in the above calculations.
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