For the following examples, specify which of the five parameters stated on page 374 is appropriate. Give and define appropriate notation for the parameter of interest. If two symbols are involved, such as μ1 - μ2, define each symbol.

a. Do men and women feel the same away about dating someone who has a great personality without regard for looks? To investigate this, one parameter that we could use is the difference in population proportions of males and females who would answer "yes" if asked, "Would you date someone with a great personality even though you did not find them attractive?"

b. The parameter of interest is the mean number of hours that students at a college say they study per week.

c. The parameter of interest is the proportion who have type O negative blood in a population.