Kay has a playlist of 10 songs. She has time to listen to 4 of the songs on her way to school. How many different arrangements of 4 songs are possible? Enter the answer in the box.

What is the measure of angle tvu shown in the diagram below

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

5,678.321 what place value is the 1 in