A Tennis Player Makes a Successful First Serve 70% of the Time.If

question 186

Multiple Choice

A tennis player makes a successful first serve 70% of the time.If she serves 80 times,is it appropriate to use a Normal model to approximate the distribution of the number of good first serves? Assume that each serve is independent of the others.

• A)No; Normal model cannot be used to approximate the distribution because nq < 10.
• B)Yes; Normal model with μ = 56 and σ = 16.80 can be used to approximate the distribution.
• C)Yes; Normal model with μ = 56 and σ = 4.10 can be used to approximate the distribution.
• D)Yes; Normal model with μ = 24 and σ = 16.80 can be used to approximate the distribution.
• E)No; Normal model cannot be used to approximate the distribution because np < 10.

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