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A sample of final exam scores is normally distributed with a mean equal to28and a variance equal to25. Part (a) What percentage of scores are

A sample of final exam scores is normally distributed with a mean equal to28and a variance equal to25.

Part (a)

What percentage of scores are between23and33? (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 below22? (Round your answer to four decimal places.)

Part (d)

What is the probability of a score less than34? (Round your answer to four decimal places.)

You may need to use the appropriate table inAppendix Cto answer this question.

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