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Binomial probability question (1 Viewer)

Rawf

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Hey guys, I need help with these questions on binomial probability (in 10J of cambridge 3u book)

Q1 - The probability that a jackpot will be won in a given lottery is 0.012. The jackpot prize is initially $10,000 and increases by $10,000 each time the prize is note won. Find, correct to 5dp, the probability that the jackpot prize will exceed $200,000 when it is finally won.

Q2 - How many times must a die be rolled so that the probability of rolling at least one six is greater than 95%?
 

alexobern

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for the first question i got 0.78549, doesn't sit right with me though
 

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