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 this information to find the expected number of snack bar items per customer. found your answer to the nearest tenth.
EV= (58+49*2+31*3+4*4+0*8)/totalcustomers
totalcustomers=58+49+31+4+8
To find the expected number of snack bar items per customer, we need to calculate the weighted average.
First, we need to calculate the total number of customers surveyed. We can sum up the number of customers in each category:
58 (bought one snack bar item) + 49 (bought two items) + 31 (bought three items) + 4 (bought four items) + 8 (avoided the snack bar altogether) = 150 customers.
To find the weighted average, we need to calculate the product of each category's count and the corresponding number of items, sum them, and divide by the total number of customers:
(58 * 1 + 49 * 2 + 31 * 3 + 4 * 4 + 8 * 0) / 150 = 2.01
Therefore, the expected number of snack bar items per customer is 2.01, rounded to the nearest tenth.