The National Longitudinal Study of Adolescent Health interviewed several thousand teens (grades 7 to 12). One question asked was “What do you think are the chances you will be married in the next 10 years?” Here is a two-way table of the responses by gender:   Opinion Female Male Almost no chance 118 113 Some chance but probably not 143 178 A 50-50 chance 461 519 A good chance 738 703 Almost certain 1162 745   How many individuals are described in this table? Correct How many females were among the respondents? The percent of females among the respondents was about %.

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter12: Probability
Section12.2: Introduction To Probability
Problem 52E
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The National Longitudinal Study of Adolescent Health interviewed several thousand teens (grades 7 to 12). One question asked was “What do you think are the chances you will be married in the next 10 years?” Here is a two-way table of the responses by gender:

 

Opinion Female Male
Almost no chance 118 113
Some chance but probably not 143 178
A 50-50 chance 461 519
A good chance 738 703
Almost certain 1162 745

 

  1. How many individuals are described in this table?
    Correct
  2. How many females were among the respondents?
  3. The percent of females among the respondents was about %.

  4. Your percent from the previous exercise is part of
    • the marginal distribution of sex.
    • the marginal distribution of opinion about marriage.
    • the conditional distribution of sex among adolescents with a given opinion.


  5. What percent of females thought that they were almost certain to be married in the next 10 years?
    %
  6. Your percent from the previous exercise is part of
    • the conditional distribution of sex among those who thought they were almost certain to be married.
    • the conditional distribution of opinion about marriage among women.
    • the marginal distribution of opinion about marriage.
  7.  
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