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 1,016 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's 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

Question

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The Answer of 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 1,016 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's 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

Sue Buys a Large Packet of Rice