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A group of physicians were interested in understanding more about how much exercise their patients get...

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Basic Math

A group of physicians were interested in understanding moreabout how much exercise their patients get each week. They randomlyselected patients from their practice and asked each patient howmuch they exercise each week, in hours. With 95% confidence, theyestimated that their patients exercise on average 3.1 hours perweek with a margin of error of 1.4.

Why do you thin it was important for the physicians to randomlyselect patients to include in their sample? How would this bedifferent if they took a convenience sample?

Answer & Explanation Solved by verified expert
4.0 Ratings (534 Votes)
A random sample was necessary to obtain since that will ensure that the selected sample is unbiased and follows a parent population distributionnormal distribution or students t    See Answer
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