sample of 25 people from each group. For group A, the mean was 52K and the variance was 10K. For group B, the mean was 49K and the variance was 7K. Calculate a 95% confidence interval on the difference between means (A-B).

5(-9w) put expression in distributive property

The chs baseball team was on the field and the batter popped the ball up. the equation b(t)=80t-16•16+3.5 represents the height of the ball above the ground in feet as a function of time in seconds. how long will the catcher have to get in position to catch the ball before it hits the ground? round to the nearest second

Type the correct answer in the box. consider the system of linear equations below. rewrite one of the two equations above in the form ax + by = c, where a, b, and c are constants, so that the sum of the new equation and the unchanged equation from the original system results in an equation in one variable.