In a survey on washing powder, it is found that the probability that a shopper chooses Soapysuds
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In a survey on washing powder, it is found that the probability that a shopper chooses Soapysuds is 0.25. Find the probability that in a random sample of nine shoppers
(a) exactly three choose Soapysuds,
(b) more than seven choose Soapysuds.
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Related Book For 
A Concise Course In Advanced Level Statistics With Worked Examples
ISBN: 9780748754755
4th Edition
Authors: J. Crawshaw, J. Chambers
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