Question
Use this information to answer the next two questions: Difference in age between husbands and wives (husband age minus wife age) of BYU married couples
Use this information to answer the next two questions:
Difference in age between husbands and wives (husband age minus wife age) of BYU married couples has an approximate Normal distribution with a mean of 1.5 years and a standard deviation of 2.1 years. Negative differences indicate that the wife is older.
21.
Approximately what percentage of BYU married couples are wife-older marriages (i.e., what percent of BYU married couples have a difference less than 0)?
- 13.7%
- 23.9%
- 5.8%
- 76.1%
2.
Referring to the information above, what is the value of a difference such that 60% of the age differences are less than it?
- 0.45 years
- 1.78 years
- 0.96 years
- 2.03 years
Please can you help me with a better explanation about question and Thank you
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