the score on the science project is the sum of the maximum heights reached by the two helicopters. What score did Ava and Serena recieve?

Me because some of question i don’t understand

On average, how many more hits will he get when he bats 100 times at home during the day as opposed to 100 times away at night?

Select the correct answer from each drop-down menu. james needs to clock a minimum of 9 hours per day at work. the data set records his daily work hours, which vary between 9 hours and 12 hours, for a certain number of days. {9, 9.5, 10, 10.5, 10.5, 11, 11, 11.5, 11.5, 11.5, 12, 12}. the median number of hours james worked is . the skew of the distribution is