9. A random sample was taken of 189 National Basketball Association games in which the score was not tied after one quarter. In 132 of these games. the team leading after one quarter won the game. (a)Find a 90% condence interval for the population proportion of all occasions on which the team leading after one quarter wins the game. (b)Without doing the calculations, state whether a 95% confidence interval for the population proportion would be wider than or narrower than that found in (a)