Assume that for a particular tire, the probability of lasting 30,000 miles (or more) is 0.75.For someone who buys a set

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answerhappygod
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Assume that for a particular tire, the probability of lasting 30,000 miles (or more) is 0.75.For someone who buys a set

Post by answerhappygod »

Assume that for a particular tire, the probability of lasting
30,000 miles (or more) is 0.75.For someone who buys a set of four
of these tires, what is the probability that she will haveto
replace at least two of them before reaching 30,000 miles? You may
use the binomialdistribution, but comment on why it might not be a
suitable model in this case.
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