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A random sample of 64 students at a university showed an average age of 20 years...

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Statistics

A random sample of 64 students at a university showed an averageage of 20 years and a sample standard deviation of 4 years. The 90%confidence interval for the true average age of all students in theuniversity is

19.50 to 20.50

19.36 to 20.38

19.18 to 20.49

19.02 to 20.59
           

Answer & Explanation Solved by verified expert
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Solution Given thatPoint estimate sample mean 20sample    See Answer
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