a) Calculate the probability that the weight of a crunch bar selected from the shelf at Boxer will exceed 30 grams. b) Calculate the proportion of crunch bars on the shelf whose weight will either exceed 40 grams or will not exceed 26 grams. c) If 12 crunch bars are randomly selected from the shelf at Boxer, calculate the probability that the total weight of the selected crunch bars will not exceed 336 grams.

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