SOLUTIONS:
- (A) 0.1804
- (B) 0.0166
- (C) 0.3233
Mean = 2/7*5
- (a) x = 3
- (b) x > 5
I'm still unsure how to approach each question, because I still get the wrong answers.
2026-03-30 17:12:35.1774890755
Poisson Probability (Shopkeeper Sales)
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You seem to have got the first two right. The last one is just the probability that he gets 3 or more orders, so you need $$ 1-e^{-\lambda} - e^{-\lambda} \lambda -\frac{e^{-\lambda} \lambda^2}{2!} $$ and you know $\lambda$.