By selling a gas oven for 1035 a shopkeeper gain 15%find it's cost price
1 answer:
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Answer:
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Step-by-step explanation:
Answer:
0.7407 = 74.07% probability that the customer is a new customer.
Step-by-step explanation:
Conditional Probability
We use the conditional probability formula to solve this question. It is
In which
P(B|A) is the probability of event B happening, given that A happened.
is the probability of both A and B happening.
P(A) is the probability of A happening.
In this question:
Event A: Pays by credit card
Event B: New customer.
Probability of a customer paying by credit card:
50% of 80%(new customers).
70% of 20%(regular customers). So
Probability of a customer paying by credit card and being a new customer:
50% of 80%, so:
What is the probability that the customer is a new customer?
0.7407 = 74.07% probability that the customer is a new customer.