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.