Lunch break: In a recent survey of 651 working Americans ages 25-34, the average weekly amount spent on lunch as $43.74 with standard deviation $2.85. The weekly amounts are approximately bell-shaped. Part: 0 / 3 Part 1 of 3 (a) Estimate the percentage of amounts that were less than $40.89. Round the answer to one decimal place. Approximately % of the amounts were less than $40.89