The 2010 U.S. Census found the chance of a household being a certain size. The data is in the pmf below ("Households by age," 2013). Let X be the number (size) in a household. E(X)= k·P(X = k) 7 (or more) P(X=k) 0.267 0.336 0.158 0.137 0.063 0.024 0.015 k 1 2 3 5 6 a) The probability of a household size being more than 5, P(X> 5) = % b) In the long run, we are expected to see a household size of, E(X)= on average. Round answer to three decimal places. c) The probability that the size of a household is equal to two is %. d) The probability of a household size being three OR six is %.

The 2010 U.S. Census found the chance of a household being a certain size. The data is in the pmf below ("Households by age," 2013). Let X be the number (size) in a household. E(X)= k·P(X = k) 7 (or more) P(X=k) 0.267 0.336 0.158 0.137 0.063 0.024 0.015 k 1 2 3 5 6 a) The probability of a household size being more than 5, P(X> 5) = % b) In the long run, we are expected to see a household size of, E(X)= on average. Round answer to three decimal places. c) The probability that the size of a household is equal to two is %. d) The probability of a household size being three OR six is %.

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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Question

The 2010 U.S. Census found the chance of a household being a
certain size. The data is in the pmf below ("Households by age,"
2013). Let X be the number (size) in a household.
E(X) = k·P(X = k)
7 (or
more)
P(X=k) 0.267 0.336 0.158 0.137 0.063 0.024 0.015
k
1
2
3
5
6
a) The probability of a household size being more than 5,
P(X > 5) =
%
b) In the long run, we are expected to see a household size of,
E(X)=
on average. Round answer to three decimal
places.
c) The probability that the size of a household is equal to two is
%.
d) The probability of a household size being three OR six is
%.

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d) The probability of a household size being three OR six is
%.

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