Chan rows at a rate of 8 mph in still water. it takes him three hours to row upstream from his house to the park. he rows back home, and it takes him two hours. what is the speed of the current?
which of the following is a clue that would solve this word problem?

(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.)