Regression methods were used to analyze the data from a study investigating the relationship between roadway surface temperature (x) and pavement deflection ( y). The data follow. Temperature Deflection Temperature Deflection xyxy 70.0 0.621 72.7 0.637 77.0 0.657 67.8 0.627 72.1 0.640 76.6 0.652 72.8 0.623 73.4 0.630 78.3 0.661 70.5 0.627 74.5 0.641 72.1 0.631 74.0 0.637 71.2 0.641 72.4 0.630 73.0 0.631 75.2 0.644 72.7 0.634 76.0 0.639 71.4 0.638

Mozart lenses inc. recently introduced seelites, a thinner lens for eyelasses. of a sample of 800 eyeglass wearers, 246 said they would purchases their next pair of eyeglasses with the new lenses. lenses inc. estimates that the number of people who purchase eyeglasses in a year is 1,700,000. most eyeglasses wearer buy one new pair of eyeglasses a year. what is the annual sales potential for the new lenses.

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Needmax 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.