3.3 Constructing Bootstrap Confidence Intervals 46 students of the random sample containing n = 500 students were expelled during the first year of their study. What is the best estimate for the proportion of all the students to be expelled during the first year of study? O The best estimate is the sample proportion p = 0.092. O The best estimate is the sample mean x = 0.092. O The best estimate is the population mean u = 0.092. O The best estimate is the sample proportion p = 0.092