You are a lifeguard at a community pool, and you are in charge of maintaining the proper ph (amount of acidity) and chlorine levels. the water test kit says that the ph level should be between 7.4 and 7.6 ph units and the chlorine level should be between 1.0 and 1.5 ppm

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