The length of segment GI is 8. True or false?

Can someone answer these problems for me

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.

Atrain is travelling from new orleans to memphis at a constant spend of 79 miles per hour. new orleans and memphis are 395.1 miles apart. how long will the train be to reach memphis round to the nearest tenth