Asked by Sara
The monthly earnings of teachers is normally distributed with a mean of $3,000 and the standard deviation of $250. We select a sample of 87 teachers. The sampling distribution of the sample mean has an expected value and standard deviation of:
a.) 3,000 and 26.8
b.) 3,000 and 1.69
c.) 3,000 and 250
d.) 3,000 and 2.87
e.) 3,000 and 321.6
a.) 3,000 and 26.8
b.) 3,000 and 1.69
c.) 3,000 and 250
d.) 3,000 and 2.87
e.) 3,000 and 321.6
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