Answer to Question #347896 in Statistics and Probability for Asw

Question

On average, 1.7 students using the Bank Islam ATM machine located outside of UMK Jeli Campus during any 30 minutes interval. Find the probability of exactly 3 students using the Bank Islam ATM machine during any 30 minutes interval.

Answer 1

Let $X=$ the number of the defective products produced: $X\sim Po(\lambda t).$

Given $\lambda t=1.7.$

$$P(X=3)=\dfrac{e^{-1.7}(1.7)^{3}}{(3)!}=0.149587$$