A population has a mean of 75 and a standard deviation of 8. A random sample of 800 is selected. The expected value of LaTeX: \bar{x}x ¯ is

a.8
b.75
c.800
d. None of these alternatives is correct.

The first floor of marcus’ house is 1,440 square feet. he will cover 1,033 square feet with wood and the rest with tile. a box of tiles will cover 11 square feet. how many boxes of tile does marcus need to buy to cover the floor?

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11

What are the domain and range of the function f(x)=2^x+1