Question 316685: in a shipment of 15 sets of golf clubs, 3 are left handed. if 4 sets of golf clubs are selected, what is the proability that exactily 1 is left handed, at least 1 is left-handed, no more than 2 are left handed and what is the eman number of left handed sets of golf clubs that you would expect to find in th esmaple of 4 sets of golf clubs
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! in a shipment of 15 sets of golf clubs, 3 are left handed.
if 4 sets of golf clubs are selected,
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Binomial Problem with n = 4 ; p = 1/5
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what is the proability that
exactly 1 is left handed = 4C1(1/5)(4/5)^3 = 0.4096
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at least 1 is left-handed = 1 - P(x=0) = 1-(4/5)^4 = 0.5904
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no more than 2 are left handed = binomcdf(4,1/5,2) = 0.9728
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what is the mean number of left handed sets of golf clubs that you would expect to find in the sample of 4 sets of golf clubs:::np = 4*(1/5) = 4/5
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Cheers,
Stan H.
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