Use the table to answer the question. Note: Round z-scores to the nearest hundredth and then find the required A values using the table.
A biologist found the wingspans of a group of monary butterflies to be normally distributed with a mean of 51.7 mm and a standard deviation of 2.4 mm. What percent of the butterflies had the following wingspans? (Round your answers to one decimal place.)
(a) less than 48.7 mm
(b) between 50 and 56 mm
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