Lunch break:In a recent survey of 607 working Americans ages 25-34, the average weekly amount spent on lunch as

$42.92 with standard deviation $2.72.The weekly amounts are approximately bell-shaped.

(a) Estimate the percentage of amounts that were less than $40.20.Round the answer to one decimal place.

(b) Estimate the percentage of amounts that were greater than $48.36

.Round the answer to one decimal place.