d. For the 11 people, find the probability that the average age that they learned to walk is between 9.5 and 12.5 months old.
d. For the 11 people, find the probability that the average age that they learned to walk is between 9.5 and 12.5 months old.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Suppose the age that children learn to walk is normally distributed with mean 11 months and standard
deviation 1.5 month. 11 randomly selected people were asked what age they learned to walk. Round all
answers to 4 decimal places where possible.
Transcribed Image Text:d. For the 11 people, find the probability that the average age that they learned to walk is between 9.5
and 12.5 months old.
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Transcribed Image Text:The average production cost for major movies is 66 million dollars and the standard deviation is 18 million
dollars. Assume the production cost distribution is normal. Suppose that 50 randomly selected major
movies are researched. Answer the following questions. Give your answers in millions of dollars, not
dollars. Round all answers to 4 decimal places where possible.
Transcribed Image Text:b. What is the distribution of ? - NO
c. For a single randomly selected movie, find the probability that this movie's production cost is
between 67 and 71 million dollars.
d. For the group of 50 movies, find the probability that the average production cost is between 67 and
71 million dollars.
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