[Solution] (a) At a store, approximately 8% of checks are "hot" checks. Find the probability of having more than 15 "hot" checks out of the next 120 checks.
Question: (a) At a store, approximately 8% of checks are "hot" checks. Find the probability of having more than 15 "hot" checks out of the next 120 checks.
(b) Find the "usual" range of hot checks (the mean within 2 standard deviation)
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