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Student scores on the Stats final exam are normally distributed with a mean of 75 and...

Student scores on the Stats final exam are normally distributed with a mean of 75 and a standard deviation of 6.5

Find the probability of the following:

(use 4 decimal places)

a.) The probability that one student chosen at random scores above an 80.

b.) The probability that 10 students chosen at random have a mean score above an 80.

c.) The probability that one student chosen at random scores between a 70 and an 80.

d.) The probability that 10 students chosen at random have a mean score between a 70 and an 80.

Math   Statistics-And-Probability   
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