Debbie studies for 12.5 hours, john studies for 6 hours, and ashley studies for 1.5 hours. what is the average number of hours the 3 students study?

The radius of a sphere is 3 inches. which represents the volume of the sphere?

Ahypothesis is: a the average squared deviations about the mean of a distribution of values b) an empirically testable statement that is an unproven supposition developed in order to explain phenomena a statement that asserts the status quo; that is, any change from what has been c) thought to be true is due to random sampling order da statement that is the opposite of the null hypothesis e) the error made by rejecting the null hypothesis when it is true

Use the squared identities to simplify sin^2x cos^2x