a sample of final exam scores is normally distributed with a
mean equal to 27 and a variance equal to 16
what percentage of scores are between 23 and 31 round your
answer to two decimals
what raw score is the cutoff for the top 10% of scores round to
one decimal
what is the portion below 21? round to four decimals
what is the probability of a score less than 33? round to four
decimals





