Question 3 A physician claims that footballer's maximal oxygen volume uptake is greater than the average of all adults. A sample of 15 footballers has a mean of 40.6 milliliters per kilogram (ml/kg) and a standard deviation of 6 ml/kg. If the average of all adults is 36.7 ml/kg, is there enough evidence to support the physician's claim at a = 0.05?

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