Two hoses are being used to fill a swimming pool. Water is pumped through through the first hoses at a rate 22 L/min and through the second hose at rate 18L/min. Write an algebraic expression for each situation. a) the amount of water pumped through the first hose after t min.
b)the amount of water pumped through the second hose after t min.
c)the total amount of water pumped into the pool from both hose after t min.
d)how much water has been pumped into the pool after 2.5 h?

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