Aresearcher tries to compare grades earned on the first quiz by boys and girls. he randomly chooses 10 students from boys and 15 students from girls and calculates the confidence interval on difference between means. how many degrees of freedom will you get in this t distribution?

What is the unit rate of, 75% high fiber chimp food to 25% high protein chimp food.

20 points plus brainliest andwer plus my hover hoard im v desperate ! evaluate the polynomial for x=-2 in the equation -3x^3+7x^2-7x-1 (simplify your answer)

Brittany has designed four different birdcages, each with the same volume: a square pyramid, a cylinder, a cone, and a sphere. the zoo wants to use one of brittany’s designs but plans to change the volume of the cage. find the design change that would result in the birdcage with the greatest volume. a.) increase the area of the base of the square pyramid by a factor of ten. b.) increase the height of the cylinder by a factor of ten. c.) increase the radius of the cone by a factor of ten. d.) increase the radius of a sphere by a factor of ten.