Distribution with approximately normal mean

Reference no: EM1319397

Roger has read a report that the weights of adult mail Siberian tigers have a distribution which is approximately normal with mean μ = 390 lb and σ = 65 lb

a) Find the probability that an individual male Siberian tiger will weigh more than 450 lb.

b) Find the probability that a random sample of 4 male Siberian tigers will have a sample mean weight more than 450 lb.

c) What is the probability that the drug will be effective for 3 hours or more?

Reference no: EM1319397

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