in a poll last year, the residents of a town were asked to rate the mayor on a scale of -10 to 10 points. The mayor reciebed an average approval rating of -2.5 points. This year, the mayors average rating decreased by 0.75points. What is the mayos average approval rating this year?

(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.)

Acredit union pays 5% annual interest, compounded daily, on savings deposits. find the value after one year of $500 deposited in this account. $525.64 $25.64 $20.40 $520.40

The track team ran a mile and a quarter during their practice how many kilometers did her team runs?