Amedical researcher estimates the percentage of children who are exposed to lead-base paint, adding that he believes his estimate has a margin of error of about 3%. explain what the margin of error means.

Now 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.

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Isaac wants the equation below to have no solution when the missing number is placed in the box. which number should he place in the box?