A biologist found the wingspans of a group of monary butterflies to be normally distributed with a mean of 52.2 mm and a standard deviation of 2.7 mm. What percent of the butterflies had the following...

A biologist found the wingspans of a group of monary butterflies to be normally distributed with a mean of 52.2 mm and a standard deviation of 2.7 mm. What percent of the butterflies had the following wingspans? (Round your answers to one decimal place.) (a) less than 48.3 mm % (b) between 49 and 53 mm %