10. A freight train leaves a station and travels at a rate of 30 miles per hour. Two hours later, an express the same station traveling in the same direction at a rate of so miles per hour. In how many hours will the express train
overtake the freight train?

Why do interests rates on loans to be lower in a weak economy than in a strong one

Logan wants to know how many skateboards have defective parts. he inspects 20,000 skateboards and keeps track of the number of defects per board. use his probability distribution table to find the expected value for defects on a skateboard.

Need 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.