There are 2 bags of marbles. one bag contains 2 red, 1 blue and 1 green marbles. the other bag contains 1 red, 2 blue and 2 green marbles. one marble is taken out of each bag at the same time. what is the probability that either a red or a green marble will be selected?

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