A bank found that 25% of its loan to new small business become delinquent. If 500 small are selected randomly from the bank's files, what is the probability that at least 140 of them are delinquent?
Added by Miguel R.
Step 1
Using the binomial probability formula, we have: P(X = 140) = (500 choose 140) * (0.25)^140 * (0.75)^(500-140) Show more…
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