The average production cost for major movies is 69 million dollars and the standard deviation is 18 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 64 and 70 million dollars.
The average production cost for major movies is 69 million dollars and the standard deviation is 18 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 64 and 70 million dollars.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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The average production cost for major movies is 69 million dollars and the standard deviation is 18 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 64 and 70 million dollars. - For the group of 8 movies, find the probability that the average production cost is between 64 and 70 million dollars.
- For part d), is the assumption of normal necessary?
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