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How far do professional golfers drive golf balls? In June 2009 a sample of 192 drives...

How far do professional golfers drive golf balls? In June 2009 a sample of 192 drives by professional golfers was recorded and the following summary statistics given: n= 192, Mean = 286.36 yd., StdDev = 8.627 yd. a.Find a 95% confidence interval b.Interpret the interval c.Explain what the 95% means in discussing this interval.

Math   Statistics-And-Probability   
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