160 people join a new gym on the first day it opened 1/4 of the group joined becouse they received a discount on their membership. 3/8 of the group joined becouse they were advised to do so by a doctor. 1/5 of the group were motivated to join by watching olympics. a) what fraction of the group had some other reason for joining. b) how many people joined becouse they were advised to do so by a doctor. c) how many were motivated to join by watching olympics?

Need now max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.