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Alternate Wordings for 'In a shop there are 20 customers 18 of whom will make a purchase. If three customers are selected one at a time at random what is the probability that all will make a purchase?
Here is another way to phrase the question: If 18 out of 20 customers make a purchase in a shop, and three customers are selected at random, what is the probablity that all will make a purchase? Each random customer has a 18/20 chance of being one that purchased, so the probability that all three make a purchase is 18/20*18/20*18/20=.729
In a shop there are 20 customers 18 of whom will make a purchase If three customers are selected one at a time at random what is the probability that all will make a purchase?
18/20 x 17/19 x 16/18 = 4896/6840, or around 71.6%.
How do people use problabilty?
People use probability to assess risk and make informed decisions in various fields, such as finance, insurance, and healthcare. It helps in predicting outcomes, such as the likelihood of an event occurring, which can guide strategies and planning. For example, businesses may use probability to forecast sales, while individuals might consider it when deciding whether to invest in stocks or purchase insurance. Additionally, probability plays a crucial role in scientific research and data analysis, allowing for conclusions to be drawn from uncertain information.
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