dmoulthrop3929
18.03.2021 •
Mathematics
Assuming a population standard deviation of seven hours, what is the required sample size if the error should be less than a half hour with a 95% level of confidence?
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Ответ:
f(x) = 3x-1
g(x) = x+2
Find (f-g)(x), this means we need to subtract g from x.
(3x-1) - (x+2)
Subtract the like terms:
3x -x = 2x
-1 -2 = -3
Add them to get 2x-3
The answer is A.