Apolitical scientist was interested in studying america's voting habits. so, he decided to make a least squares regression equation to predict the percentage of people that would vote for obama in 2012 based on the percentage of people that voted for obama in 2008. the least squares equation is y-hat = -4.599 +1.04x. the value of r-squared was 96.69%. what would be the value of r? group of answer choices 0.9669 0.9833 -0.9669 -0.9833 0.9349 -0.9349

Select the number of ways in which a line and a circle can intersect

Assume that there is a 11% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on four independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?

Three students, javier, sam, and corrine, participated in a fundraiser where people donated a certain amount of money per lap that the student ran. each student also had some initial donations that were collected before the run. the equations that represent each student's total donation, y, based on the number of laps ran, x, is shown below. match each equation with the correct rate of change for that student.