(i)[3]
Find the probability that Janice purchases no more than $7$ items online during a $10$-week interval.
(ii)[3]
The probability that Janice buys at least one online item in $n$ weeks exceeds $0.99$. Determine the smallest possible value of $n$.
Mathematics 9709 · AS & A Level · The Poisson distribution
The Poisson distribution — practice question
In any given week, the chance that Janice buys one item online is $0.35$. In a single week, Janice never purchases more than one online item.
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