According to a study, the scale of scores on an iq test of adults is approximately normal with mean 98 and standard deviation 13 . the organization mensa, which calls itself "the high-iq society," requires an iq score of 130 or higher for membership. what percent of adults (± 0.1%) would qualify for membership?

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.

Secant be and cf intersect at point d inside a what is the measure of cde

Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.