Lunch break: In a recent survey of 655 working Americans ages 2534, the average weekly amount spent on lunch was $43.65 with standard dei $2.74. The weekly amounts are approximately bellshaped. (a) Estimate the percentage of amounts that are between $38.17 and $49.13. Approximately 95% V of the amounts fall between $38.17 and $49.13. (b) Estimate the percentage of amounts that are between $35.43 and $51.87. of the amounts fall between $35.43 and $51.87. (c) Between what two values will approximately 68% of the amounts be? Approximately 68% of the amounts fall between $E] and $E]. E