Calculate the standard error. May normality be assumed? (Round your answers to 4 decimal places.) Normality Standard Error Yes No Y (a) n = 25, n - .59 (b) n= 48, n = .16 (c) n = 123, - .25 (d) n = 506, =.002

A bar of metal is cooling from 1000°C to room temperature, 21°C. The temperature, H, of the bar t minutes after it starts cooling is given, in °C, by H = 21 +979e-0.1t (a) Find the temperature of the bar at the end of one hour. (Round your answer to the nearest degree.) °C (b) Find the average value of the temperature over the first hour. (Round your answer to the nearest degree. **) °C (c) Is your answer to part (b) greater or smaller than the average of the temperatures at the beginning and the end of the hour? The answer to part (b) is [---Select--- ] than the average of the temperatures at the beginning and the end of the hour, because the graph is concave [---Select--- ** You may want to use the numerical integration tool https://www.zweigmedia.com/RealWorld/integral/integral.html .

Looks like the MAD was wrong. The error rate on period 5 should have been 132.15 not 130.15. Maybe that through off the rest of the answers.    e. What is the predicted annual change of industry sales? (Round your answer to 2 decimal places.) Predicted annual change of industry sales ____________ f. Predict sales for the next three periods. (Round your answers to 2 decimal places.) Sales (19) _____________ Sales (20 _______________ Sales (21) _______________

04/ You measure the voltage drop Vacross a resistor for a number of different values of current i. the results are: I0.25 0.75 1.25 1.5 2 v-0.45 -0.6 0.7 1.88 6 Use Lagrangian interpolation to estimate the voltage drop for i- 1.15, (carry out 4 decimal places in your work)?