pg 620 A childrens theater found in a random survey that 58

pg 620

A children\'s theater found in a random survey that 58 customers bought one snack bar item, 49 bought two items, 31 bought three items, 4 bought four items, and 8 avoided the snack bar altogether. use information to find the expected number of snack bar items per customer round your answer to the nearest 10th

Solution

: E[x] = (58*1 +49*2 +31*3 +4*4 +8*0)/(58+49+31+4+8) = 265/150 = 1 23/30 or 1.7667