Question-40

The number of items sold by an online store in an hour follows a Poisson distribution with
\(λ\) equal to 2. Find the probability that in the next 4 hours, exactly 3 items will be sold. (Answer the question correct to three decimal points.)

Hint

\(\lambda = 2\) which is mean number of items sold per hour. Therefore, for the next four hours, \(\lambda\) will be updated as \(\lambda_{new}=4\times 2 = 8\). Now, find the required probability by using the updated value of \(\lambda\).

Answer

0.029

Solution