Tim tracked the change in outside temperature one afternoon. he recorded a temperature of 85.4 f at noon. the temperature then rose 3.85 f over the next 4 hours. at 5: 00 pm tim recorded a temperature of 89.25 f. how did the temperatue change between 4: 00 pm and 5: 00 pm

(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.)