The graph of the step function g(x) = -[x] + 3 is shown. What is the domain of g(x)?
y
05
O {xl x is a real number}
{xl x is an integer;
O{x-2 O {x|-15x55}
300
N
1
A-O
-5 -4 -3 -2 -14-
1 23
-21
-3+
-4-
I

A. find the power of the test, when the null hypothesis assumes a population mean of mu = 450, with a population standard deviation of 156, the sample size is 5 and the true mean is 638.47 with confidence intervals of 95 b. find the power of the test, when the null hypothesis assumes a population mean of mu = 644, with a population standard deviation of 174, the sample size is 3 and the true mean is 744.04 with confidence intervals of 95% c. find the power of the test, when the null hypothesis assumes a population mean of mu = 510, with a population standard deviation of 126, the sample size is 10 and the true mean is 529.44 with confidence intervals of 95