What is the probability that a randomly selected stock costs

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Suppose that stock prices on the NYSE can be modeled using the normal distribution, with mean $30 and standard deviation $9.50.

a) What is the probability that a randomly selected stock costs between $25 and $40?

b) What is the 1st quartile for these stocks?

c) What is the probability that the mean of a random sample of 30 such stocks exceeds $33?

Reference no: EM131966730

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