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The batting averages of Mark McGwire and Mark McLemore for 13 recent years are listed below...

The batting averages of Mark McGwire and Mark McLemore for 13 recent years are listed below (so it is a SAMPLE). Which player is the better hitter?  Explain your reasoning using data. Round your values to three decimal places.

McGwire : .236 .240 .243 .150 .148 .246 .284 .257 .261 .290 .261 .247 .257

McLemore: .189 .289 .260 .231 .235 .201 .268 .333 .252 .274 .312 .274 .299

Math   Statistics-And-Probability   
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Answer #1

The mean and standard deviation of the the batting averages for McGwire is

and

The mean and standard deviation of the the batting averages for McLemore is

   and

As for McLemore mean is larger than McGwire and standard deviation of McLemore   is less than that of McGwire

Hence, McLemore is better hitter than McGwire

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