1. Design and draw the simplest logic expression that detects Prime Number Codes from 4- bit BCD input codes. (Note: 0 and 1 are not prime numbers) BCD CODES A B C D Q AB AB AB AB CD CD CD CD

F2 * Please use the accompanying Excel data set or accompanying Text file data set when completing the following exercise. An article in the ASCE Journal of Energy Engineering ("Overview of Reservoir Release Improvements at 20 TVA Dams," Vol. 125, April 1999, pp. 1-17) presents data on dissolved oxygen concentration from streams below 20 dams in the Tennessee Valley Authority system. The sample mean from the observations is X 3.272 and the sample standard deviation is s = 2.130. Assume population is approximately normally distributed. Round your answers to 2 decimal places. = (a) Calculate the 95% two-sided confidence interval on the mean oxygen concentration. 2.29 i -1.2736 SUS 4.28 (b) Calculate the 95% two-sided prediction interval on the dissolved oxygen concentration for the next stream that will be tested. (i -3.6752 7.8456 (c) Find an interval that will contain 95% of the values of the dissolved oxygen concentration with 99% confidence. @ 3 # 80 F3 000 F4 $ 4 i 10.2472 75 %…

2. A bank of nickel-cadmium cells is used as the emergency lighting supply for a hospital. There are 100 cells connected in series and each has an A-hr rating of 120 A-hr. The bank has to be replaced, and the manufacturer is no longer supplying nickel-cadmium cells. It is decided to replace the cells with lead-acid cells. How many lead-acid cells will be required if each has an A-hr rating of 60 A-hr, and how should they be connected?

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