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Sue Buys a Large Packet of Rice

Question 194

Multiple Choice

Sue buys a large packet of rice.The amount of rice that the manufacturer puts in the packet is a random variable with a mean of 1016 g and a standard deviation of 8 g.The amount of rice that Sue uses in a week has a mean of 200 g and a standard deviation of 29 g.If the weight of the rice remaining in the packet after a week can be described by a Normal model,what is the probability that the packet still contains more than 831.0 g after a week?


A) 0.655
B) 0.274
C) 0.691
D) 0.309
E) 0.345

Correct Answer:

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