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Mathematical Statistics with Applications | 7th Edition | ISBN: 9780495110811 | Authors: Dennis Wackerly; William Mendenhall; Richard L. Scheaffer
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One hundred adults were interviewed in a telephone survey.

Chapter 2, Problem 74E

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QUESTION:

One hundred adults were interviewed in a telephone survey. Of interest was their opinions regarding the loan burdens of college students and whether the respondent had a child currently in college. Their responses are summarized in the table below:

\(\begin{array}{lcccr} & & {\text { Loan Burden }} & \\ \text { Child in College } & \text { Too High }(A) & \text { About Right }(B) & \text { Too Little }(C) & \text { Total } \\ \hline \text { Yes }(D) & .20 & .09 & .01 & .30 \\ \text { No }(E) & .41 & .21 & .08 & .70 \\
\text { Total } & .61 & .30 & .09 & 1.00 \\ \hline \end{array}\)

Which of the following are independent events?

a. A and D

b. B and D

c. C and D

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(2 Reviews)

QUESTION:

One hundred adults were interviewed in a telephone survey. Of interest was their opinions regarding the loan burdens of college students and whether the respondent had a child currently in college. Their responses are summarized in the table below:

\(\begin{array}{lcccr} & & {\text { Loan Burden }} & \\ \text { Child in College } & \text { Too High }(A) & \text { About Right }(B) & \text { Too Little }(C) & \text { Total } \\ \hline \text { Yes }(D) & .20 & .09 & .01 & .30 \\ \text { No }(E) & .41 & .21 & .08 & .70 \\
\text { Total } & .61 & .30 & .09 & 1.00 \\ \hline \end{array}\)

Which of the following are independent events?

a. A and D

b. B and D

c. C and D

ANSWER:

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We will find out which are the independent events using the given numbers above.

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