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Author Question: Assume x is normally distributed with mean = 15 and standard deviation = 3 . Use the approximate ... (Read 103 times)

mwit1967

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on: Jun 24, 2018
Assume x is normally distributed with mean  = 15 and standard deviation  = 3 . Use the approximate areas beneath the normal curve, as discussed in this section, to find P(x 12).

Question 2

The average cost of renting a compact size car in a major metropolitan area of the U.S. is 51.74 with a standard deviation of 7.48 . Assume a normal distribution. If a sample of 20 cities is taken, what is the probability that the sample mean will fall between 47.74 and 55.74?


Animal_Goddess

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Reply #1 on: Jun 24, 2018
Answer to Question 1

0.8415

Answer to Question 2

0.9832


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mwit1967

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Reply #2 on: Jun 24, 2018
Thank you


Animal_Goddess

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Reply #3 on: Jun 24, 2018
No problemo


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