part 3 of 3 needs to be answered

Lunch break: In a recent survey of 604 working Americans ages 25-34, the average weekly amount spent on lunch as $42.55 with standard deviation $2.61. The weekly amounts are approximately bell-shaped. Part 1 of 3 EO (a) Estimate the percentage of amounts that were less than $39.94. Round the answer to one decimal place. Approximately 15.9 % of the amounts were less than $39.94. olo Part 2 of 3 (b) Estimate the percentage of amounts that were greater than $47.77. Round the answer to one decimal place. Approximately 2.3 % of the amounts were greater than $47.77. Part: 2 / 3 Part 3 of 3 (c) Estimate the percentage of amounts that were between $42.55 and $45.16. Round the answer to one decimal place. Approximately % of the amounts fall between $42.55 and $45.16