Michael asked a random sample of 40 of his peers how many siblings they have. He recorded the data in the table below: There are a total of 4,000 students in Michael’s school. Approximately how many students at his school would he expect to have exactly 1 sibling?

An advertisement is on a flyer that has a thickness of 8.2 × 10-5 meters. each measurement below is the thickness of a stack of flyers. drag each measurement to the correct stack.

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.

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.