Directions: Find the percent of change and classify as a percent increase or decrease. Round to the nearest tenth of a percent when necessary. For example, if your answer is 12% but is representing an increase, you will need to type "12% increase". If your answer is representing a decrease, you will need to type "12% decrease". Show all work on a separate piece of paper and submit it under the corresponding assignment. A savings account with $500 now has $120. Percent decrease

(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.)