Question 2. Hint: Class 1. In 2005, Microsoft announced a voluntarily recall of power assembly on over 14 million X-box game consoles. The company received reports of power supply cords overheating and, in about 30 cases, causing minor fire damage. Microsoft suspected that the average voltage of X-boxes might be too high (engineering requirement=12 volts). What would be the parameter Microsoft wants to estimate using the data from a sample? A random sample of 45 power supplies for Microsoft X-box results in an average voltage of 12.4 volts. Is the sample size large enough? Can we use the confidence interval?Question 3. Hint: Class 2. Aveda needs their automatic filling machine to put on average 20 ounces of volumizing shampoo to each bottle. Shutting down the machine is very costly, but the company will do this if there is very strong evidence that the fill rate is significantly different than 20 ounces. A. Set up the null and alternative hypothesis. B. Find the correct Null and Alternative Hypotheses