The health department in a certain county surveyed nearly 5,000 households in 2002 about health and sexual behavior. Of the respondents aged 18 to 29, the probability of being abstinent that year was 0.06; the probability of having one sex partner was 0.53, and the probability of having three or more sex partners was 0.23.3
a. Tell whether the number 0.06 is a statistic or a parameter and whether it should be denoted or pN p.
b. Which was more common-having two sex partners or having three or more sex partners? Explain how you got your answer.
c. Suppose two people living in the same household are picked from all those surveyed who were aged 18 to 29. Either find the probability that both of them had one sex partner, or tell why the probability cannot be found with the given information.
d. Suppose two people are picked at random from all those surveyed who were aged 18 to 29. Either find the probability that both of them had one sex partner, or tell why the probability cannot be found with the given information.