The grid shows the positions, in miles, of a subway stop and a house. the image is of a 2-dimensional graph with an x-axis and a y-axis. a point is marked as house with co-ordinate (4,3). another point with co-ordinate (-4,-3) is marked as subway. to the nearest mile, what is the distance between the subway stop and the house?

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