The average grade on a quiz was 39.5/50 (79%). Assume that the distribution of grades is normally

Question:

The average grade on a quiz was 39.5/50 (79%). Assume that the distribution of grades is normally distributed, with a standard deviation of 1.5.
a. What is the probability that the average grade is more than 37.0?
b. What is the probability that the average grade is less than 41.5?
c. What is the probability that the average grade is between 36.0 and 37.0?
d. What is the probability that the average grade is less than 36.0 or more than 37.0?

Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...

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