1 For a science project on life of batteries, a student tested how long 16 heavy-duty batteries would power a portable CD player. Here are the running times, in hours. 29, 26, 23, 22, 21, 17, 27, 25, 22, 22, 23, 22, 27, 23, 24, 26 a) Determine the range for these data. [2] Range & night value smallest value 4-1+ =12 Rome 5 clandes close widis No-8 CARS b) Determine a reasonable interval size and the number of intervals. [2] :13)