4. In a recent survey of LA county residents who identify as sports fans, 203 out of 853 chose the Lakers as their favorite local team. Use 90% for the confidence level. a) Find the point estimate for the population proportion of Angeleno sports fans who would select the Lakers as their favorite local team. b) What critical value will we use? c) Find the margin of error. d) Find the confidence interval. e) Without calculating it, would a 99% confidence interval be wider or narrower