The state test scores for 12 randomly selected high school seniors are shown on the right. Complete parts (a) through (c) below.
Assume the population is normally distributed.
able[[1430,1222,990],[694,725,833],[728,743,546],[629,1444,943]]
(a) Find the sample mean.
ar{x} =, (Round to one decimal place as needed.)
The state test scores for 12 randomly selected high school seniors are shown on the right.Complete parts (a) through (c) below. Assume the population is normally distributed
1430 694 728 629
1222 725 743 1444
990 833 546 943
(a) Find the sample mean.
x= (Round to one decimal place as needed)