A sample of 500 evening students revealed that their annual incomes were normally distributed
With a mean income of $50,000 and a standard deviation of $4,000. What is the income that
Separates the top 25% from the lower 75% of the incomes?
A) $2,680
B) $47,320
C) $50,000
D) $52,680
Correct Answer:
Verified
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