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A sample of final exam scores is normally distributed with a mean equal to 26 and...

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Statistics

A sample of final exam scores is normally distributed with amean equal to 26 and a variance equal to 16.

(a) What percentage of scores are between 22 and 30? (Round youranswer to two decimal places.)

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

(c)What is the proportion below 19? (Round your answer to fourdecimal places.)

(d)What is the probability of a score less than 33? (Round youranswer to four decimal places.)

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