A cashier at Carter's cafeteria can total an average of 2.2 trays per minute.
-The probability that the cashier will total exactly four trays in a minute is:
A) 0.9275.
B) 0.8918.
C) 0.1082.
D) 0.0992.
E) 0.1169.

Question

Quizplus · Accepted Answer

The problem involves a Poisson distribution with an average rate (λ) of 2.2 trays per minute. The probability of exactly k events (k=4 trays) is given by the formula P(X=k) = (e^(-λ) * λ^k) / k!. Plugging in the values, we get P(X=4) = (e^(-2.2) * 2.2^4) / 4! = 0.1082.

A Cashier at Carter's Cafeteria Can Total an Average of 2.2