To find simple interest, you multiply the principal (in dollars) the interest rate (as a decimal), and the time in years. The equation 11 40 = 200.0019.3 shows how to find the simple interest for a certain account after 3 years What is the interest rale (as a percent)? How much is the simple interest? What is the principal?
What is the interest rate (as a percent)?

(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.)