4 couples decide separately to go out for dinner by choosing from the same list of 15
restaurants in a guide book. If each couple randomly chooses a restaurant from the list of 15, what is the
probability that two or more couples end up at the same restau
rant?
SOLUTION-
NO OF COUPLES(N) =4
PROBABILITY OF CHOOSING SAME RESTAURANT(p) = 1/15 = 0.07
LET X BE THE NO OF COUPLES THAT REACH THE SAME RESTAURANT
X ~ BINOMIAL( N=4, P=0.07)
SO,
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