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On average 4 0 customer groups come to a coffee restaurant in o ne hour. Fifty per cent of groups have a group size of
On average customer groups come to a coffee restaurant in o ne hour. Fifty per cent of groups have a group size of one so in fact, they are single Onefourth of the groups are couples. The other onefourth have a group size of a Find the expected number of customers coming in minutes. b Find the probability that a couple comes before a single person. c Find the probability that no couple comes in minutes.
On average customer groups come to a coffee restaurant in o
ne hour. Fifty per cent of groups have
a group size of one so in fact, they are single Onefourth of the groups are couples. The other onefourth have
a group size of
a Find the expected number of customers coming in minutes.
b Find the probability that a couple comes before a single person.
c Find the probability that no couple comes in minutes.
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