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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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slapaburger slapaburger
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6 years ago
A sample of 13 college professors has a mean age of 30 years and a standard deviation of 5 years. Suppose that the sample is enlarged to 15 college professors, by including two additional professors that are each 30 years old. Will the standard deviation increase, decrease, or stay the same, and why?
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kimmazkimmaz
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6 years ago
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shangshang
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6 years ago
Thank you, thank you, thank you!
smdavis
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Yesterday
Good timing, thanks!
54321abs
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2 hours ago
Thanks
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