MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Part D please thank you!
The average production cost for major movies is 65 million dollars and the standard deviation is 19 million
dollars. Assume the production cost distribution is normal. Suppose that 43 randomly selected major
movies are researched. Answer the following questions. Round all answers to 4 decimal places where
possible.
a. What is the distribution of X? X - N( 65
b. What is the distribution of ? N( 65
✓2.8975
c. For a single randomly selected movie, find the probability that this movie's production cost is
between 59 and 62 million dollars. 0.0612
d. For the group of 43 movies, find the probability that the average production cost is between 59 and
62 million dollars.
e. For part d), is the assumption of normal necessary? No Yes
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19
H
a
FH
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Transcribed Image Text:The average production cost for major movies is 65 million dollars and the standard deviation is 19 million dollars. Assume the production cost distribution is normal. Suppose that 43 randomly selected major movies are researched. Answer the following questions. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X - N( 65 b. What is the distribution of ? N( 65 ✓2.8975 c. For a single randomly selected movie, find the probability that this movie's production cost is between 59 and 62 million dollars. 0.0612 d. For the group of 43 movies, find the probability that the average production cost is between 59 and 62 million dollars. e. For part d), is the assumption of normal necessary? No Yes Question Help: Written Example Message instructor Submit Question 19 H a FH
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