TENNIS A double fault in tennis is when the serving player fails to land their serve "in" without stepping on or over the service line in two chances. Kelly's first serve percentage is 40%, while her second serve percentage is 70%.

a. Draw a probability tree that shows each outcome.

Probability is a mathematical concept concerned with determining the likelihood of occurrence of a given event, which is demonstrated as a range of 1 and 0. A certainty is an event with such a probability of one.

Now, as per the given question;

Kelly's first serve percentage is 40% = 0.4.

Kelly's second serve percentage is 70% which comprises of successful and faulty serve.

The probability that the second serve will be successful is;

= 0.6×0.7

= 0.42

Thus, probability that the second serve will be successful is 0.42.

Now, the probability the second serve will be unsuccessful is;

= 0.6×0.3

= 0.18

Thus, probability that the second serve will be unsuccessful is 0.18.

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TENNIS A double fault in tennis is when the serving player fails to land their serve "in" without stepping on or over the service line in two chances. Kelly's first serve percentage is 40%, while her second serve percentage is 70%. a. Draw a probability tree that shows each outcome.

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What is termed as probability?

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TENNIS A double fault in tennis is when the serving player fails to land their serve "in" without stepping on or over the service line in two chances. Kelly's first serve percentage is 40%, while her second serve percentage is 70%.

a. Draw a probability tree that shows each outcome.