Question 263245: 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?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! 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?
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1st: Find the z-value of 915
z(915) = (915-920)/5 = -1
Then P(x< 915) = P(z < -1) = normalcdf(-100,-1) = 0.1587
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Cheers,
Stan H.
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