Answered: Consider the following hypothetical…

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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Question

Consider the following hypothetical survey results of 18- to 34-year-olds in a certain country, in response to the question "Are you currently living with your family?"

	Yes	No	Totals
Women	94	154	248
Men	108	144	252
Totals	202	298	500

(a)

Develop the joint probability table for these data and use it to answer the following questions.

	Yes	No	Totals
Women
Men
Totals

(b)

What are the marginal probabilities?

P(18- to 34-year-old woman)

P(18- to 34-year-old man)

P(responded yes)

P(responded no)

(c)

What is the probability of living with family given you are an 18- to 34-year-old woman in this country? (Round your answer to four decimal places.)

(d)

What is the probability of living with family given you are an 18- to 34-year-old man in this country? (Round your answer to four decimal places.)

(e)

What is the probability of an 18- to 34-year-old in this country living with family?

(f)

If, in this country, 50.6% of 18- to 34-year-olds are male, do you consider this a good representative sample? Why?

Since

P(18- to 34-year-old man) =

in this sample, this ---Select--- seems does not seem like a good representative sample based on gender.

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