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# A sample of final exam scores is normally distributed with a mean equal to 20 and...

A sample of final exam scores is normally distributed with a mean equal to 20 and a variance equal to 16.

• Part (a)

What percentage of scores are between 16 and 24? (Round your answer to two decimal places.)
%

• Part (b)

What raw score is the cutoff for the top 10% of scores? (Round your answer to one decimal place.)

• Part (c)

What is the proportion below 15? (Round your answer to four decimal places.)

• Part (d)

What is the probability of a score less than 25? (Round your answer to four decimal places.)

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