Suppose that the scores on a reading ability test are normally distributed with a mean of and a standard deviation of . what proportion of individuals score less than points on this test? round your answer to at least four decimal places.

Which of the following expressions is equal to 2x^2+8

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

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.