So umm... I was playing on my parent's phone in their room when I went to lay down on the floor I saw a vape under their bed it felt like it was used about 4 times but I shoved it more to the back of the bed. But what should I do? Should I confront them? Or just stay quiet? Btw the only siblings I have is a younger brother that is 8 so pretty sure not him and an older sister 17 but she was not here for a month so yeah I. dkkk

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