For the telephone u sage model of example 1.18, let brn denote the event that a call is billed for m, minutes. to generate a phone bill, observe t he duration of the call in integer minutes (rounding up). charge for m minutes jv! = 1, 2, 3, .. if the exact duration t is m - 1 < t < m. a more complete probability model sho, vs that for m, = 1, 2, . . the probability of each event brri is

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.

Apolynomial has two terms. check all of the factoring methods that should be considered. common factor difference of cubes sum of cubes difference of squares perfect-square trinomial factoring by grouping

Three friends are comparing the prices of various packages of golf balls at a sporting goods store. hector finds a package of 6 golf balls that costs $4.50.