Match the following equation to the correct situation. 30%(b − 15) = 30%b − 4.5
A.
A number of songs are available for download from 30% of b artists.

B.
Last month's electricity bill was 4.5 kW-h less than 30% of this month's bill.

C.
A number of cups of coffee were thrown away by 30% of b senators during 4.5 speeches.

D.
An amount of chili was eaten from 30% of 4.5 less than b bowls.

How do you determine if an ordered pair is a solution to a given equation?

(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.)

1. if events a and b are non-overlapping events, how do you find the probability that one or the other occurs? 2. what does it mean if p(a or b) equals 1?