The mass of a species of shrew is approximately normally

Reference no: EM13611112

The mass of a species of shrew is approximately normally distributed with a mean of 10 grams and a standard deviation of 5 grams, then (no continuity correction)

a) What is the probability that a random sample of 9 shrew has a total mass of more than 100 grams?

b) What is the probability that a sample of 10 shrews has a mean greater than 12 grams?

Reference no: EM13611112

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