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Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

If you prove that ∆wxz is congruent to ∆yzx, which general statement best describes what you have proved?