a. What is the distribution of X? X - N( b. What is the distribution of x? x ~ NO c. What is the probability that one randomly selected person learned to walk when the person was between 10.5 and 12.5 months old?
a. What is the distribution of X? X - N( b. What is the distribution of x? x ~ NO c. What is the probability that one randomly selected person learned to walk when the person was between 10.5 and 12.5 months old?
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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
Transcribed Image Text:Suppose the age that children learn to walk is normally
distributed with mean 11 months and standard deviation 1
month. 6 randomly selected people were asked what age they
learned to walk. Round all answers to 4 decimal places where
possible.
a. What is the distribution of X? X - N(
b. What is the distribution of x? - N(
c. What is the probability that one randomly selected
person learned to walk when the person was between
10.5 and 12.5 months old?
d. For the 6 people, find the probability that the average
age that they learned to walk is between 10.5 and 12.5
months old.
e. For part d), is the assumption that the distribution is
normal necessary? Yes No
f.
Find the IQR for the average first time walking age for
groups of 6 people.
Q1
=
Q3
IQR:
||
months
months
months
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