Ahigh school tennis player got her first serve in 80% of the time for the first 10 matches of the season. in the next 5 matches, she only got her first serve in 62% of the time. what is the weighted average for the player's first serve.

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.