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The fill weight of a certain brand of adult cereal is normally distributed with a mean of 920 grams and a standard deviation of 5 grams. If we select one box of cereal at random from this population, what is the probability that it will weigh less than 915 grams?
0.8413
0.3413
0.1587
0.5000
To test the given claim using Single Proportion Z test.
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