Ajet flew at an average speed of 480 mph from point x to point y. because of head winds, the jet averaged only 460 mph on the return trip, and the return trip took 30 minutes longer. how many hours was the flight from point y to point x? how far is it from point x to point 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.