Ms. Watson's class read for a total
of 450 hours this month. Mr. Gerk's
class read two-thirds the number of
hours read by Ms. Watson's class.
Miss Rupp's class read twice the
number of hours read by Mr. Gerk's
class. If there were a total of
90 students in these three
classrooms, what was the average
number of hours read per student?

Cor d? ? me ? 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.