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11. (9.33m machine lls bags with pieces of ice. Of course, not every bag gets exactly the same number of pieces. Assume the number of pieces per bag is normally distributed, with a mean of 145 and a standard deviation of 15. a. (4 pts) On the normal distribution model below, write in the cut-off scores and the percentages for each interval. Y ' " Using the model from above and a sample of 400 bags of ice, answer the following questions: b. (1 pt) According to the normal distribution model, about 95% of bags have between and pieces of ice