Direction: Select the correct answer of each item and write only the letter on a separate sheet. 1. Which statements is true about the Central Limit Theorem? a. To get a good estimate of the population mean, decrease n. b. To get a good estimate of the population mean, increase n. c. To get a good estimate of the population mean, increase or decrease n. d. To get a good estimate of the population mean, lower n. 2. Which of the following statements is TRUE as n increases? a. The shape of the sampling distribution would become right-skewed. b. The shape of the sampling distribution would become more bell-shaped. C. The shape of the sampling distribution would become left-skewed. d. The shape of the sampling distribution would become rectangular. For nos. 3-5, refer to this situation: A molding machine prepares a certain kind of car spare part with a target mean diameter of 40.27 mm and the machine has some variability, so the standard deviation is 0.004 mm. A sample of 6 spare parts is inspected each hour for process control purposes & records are kept of the sample mean diameter. 3. What is the sample mean? b. 40.27 c. 402.7 a. 6 d. 0.004 4. What is the value of o? b. 0.004 c. 40.27 a. 6 d. 402.7 5. Find the standard deviation of the sampling distribution. (o, = o/Vn ) a. 0.001 b. 0.002 c. 0.003 d. 0.0041. df = ; coefficient = 2. df = ; coefficient = 3. df = ; coefficient = 4. df = * coefficient = 5. df = ; coefficient =Determine the degrees of freedom & find the confidence coefficient of each. Write your answer on a separate sheet. 1. n = 6, 90% confidence 2. n = 29, 90% confidence 3. n = 12, 95% confidence 4. n = 31, 95% confidence 5. n = 24, 99% confidence