In a math class of 40 students, there are 21 female students. Which of the following does NOT represent a ratio of the number of girls in the classroom to the total number of students?

19/40
0.53
21/40
53%

Tanyss's house has 25 windows. her brother has washed 22 of the windows. what percent of the windows has her brother washed?

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

For an exponential regression equation in the form , a value of 1.101 for b will cause to get smaller as x gets larger.