Regents High School Examination - Mathematics B Worksheet - The University Of The State Of New York, 2009 Page 11

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28 Dave is the manager of a construction supply warehouse and notes that
60% of the items purchased are heating items, 25% are electrical items,
and 15% are plumbing items. Find the probability that at least three
out of the next five items purchased are heating items.
[11]
[OVER]
Math. B – Aug. ’09

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