### Suppose that stock prices on the NYSE can be modeled using the normal distribution, with mean $30 and standard deviation $9.

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4. 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?

#### Question

Suppose that stock prices on the NYSE can be modeled using the normal distribution, with mean $30 and standard deviation $9.

- Written in: 17-Oct-2019
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DATE ANSWEREDOct 17, 2019

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