Mathematics, 13.04.2020 22:33 RayBanMan2017

A biologist wants to estimate the difference between the mean body lengths of green and browns stunk bugs. A random sample of 20 green stinkbugs has a mean body length of 16.22 mm and a standard devotion of 1.34 mm. A random sample of 20 brown stinkbugs has a mean body length of 13.41 mm and a standard deviation of .73 mm. What is the standard error of difference between sample means?

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