Mrs. Hallmark wants to sell a box of two varieties of birthday cards for $5.80. The number of 30 cent cards is six more than
one half the number of 35 cent cards. How many 35 cent cards
are in the box?
8
None of these
12
10

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.