PART (B OR #2) SUPPOSED TO BE TWO ANSWERS, MISSING C, D, AND E ANSWERS
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
The average production cost for major movies is 67 million dollars and the standard deviation is 20 million dollars. Assume the production cost distribution is normal. Suppose that 8 randomly selected major movies are researched. Answer the following questions. Round all answers to 4 decimal places where possible.
- What is the distribution of XX? XX ~ N(,)
- What is the distribution of ¯xx¯? ¯xx¯ ~ N(,)
- For a single randomly selected movie, find the
probability that this movie's production cost is between 66 and 68 million dollars. - For the group of 8 movies, find the probability that the average production cost is between 66 and 68 million dollars.
- For part d), is the assumption of normal necessary? Yes OR NO PART (B OR #2) SUPPOSED TO BE TWO ANSWERS, MISSING C, D, AND E ANSWERS
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VIEWStep 2: 1) Obtain distribution of X
VIEWStep 3: 2) Obtain the distribution of barX
VIEWStep 4: 3) Calculate the probability for a single movie production cost between 66 and 68 million dollars.
VIEWStep 5: 4) Calculate the probability for the average production cost of 8 movies between 66 and 68 million $
VIEWStep 6: 5) Explain for part 4, is the assumption of normal necessary.
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