1. l. b. johnson middle school held a track and field event during the school year. the chess club sold various drink and snack items for the participants and the audience. altogether, they sold 486 items that totaled $2,673

a. if the chess club sold each item for the same price, calculate the price of each item.

b. explain the value of each digit in your answer to a using place value terms

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