a high school princable ask a physcical education teacher and football coach to obtain a sample of 20 students each to compare times in physcical activity each week. The physical education teacher randomly selects 20 students from her classes, and the football coach randomly selects 20 students from football. Do you expect comparison to be fair?

(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)

Subtract and simplify. (-y^2 – 4y - 8) – (-4y^2 – 6y + 3) show how you got the answer if your answer is right i will mark you

You are installing new tile on an outside patio. the area (in square feet) of the rectangular patio can be represented by 8x squared +33x+4.