MULTIPLE CHOICES Choose the letter of the correct answer. Write your answer inside the box at the end of each question. If the answer is not found in the choices, PROVIDE it BESIDE the item. For numbers 1 - 5, please refer your answers to the given table below. Sampling Distribution of Sample Means Sample Means Frequency Probability P (X ) P (X ) 2.00 1 1/10 7/3 1/10 8/3 2 1/5 3.00 2 1/5 10/3 2 1/5 1 1/3 1 1/10 4.00 1/10 Total 1.00 How many samples are indicated in the table? A. 8 C. 10 B. 9 D. 1I Which of the following statements describes the sampling distribution above? A. The distribution describes a normally distributed distribution B. The distribution describes an unbiased distribution. C. The distribution describes a well-defined distribution. D. All of the above What is the mean of the distribution? A. 3 C. 5 B. 4 D. 6 What is the variance of the distribution? A. 0.12 C. 0.51 B. 0.33 D. 0.24 5. What is the standard deviation of the distribution? A. 0.25 B. 0.31 C. 0.57 D. 0.24 For numbers 6 - 10, refer your answers in the given situation below. The average time it takes a group of college students to complete a certain examination is 46.2 minutes. The standard deviation is 8 minutes. Assume that the variable is normally distributed.6. What is the mean time it takes a group of college students to complete a certain examination? C. 46.2 A. 44 D. 40 B. 8 What is the probability that a randomly selected college student will complete the examination in less than 43 minutes? A. 43.34% C. 24.34% B. 30.21% D. 34.46% 8. Which of the following symbols describes the unknown in the problem? A. P(X > 43) C. P(X 2 43) B. P(X 3.14 D. 2.86 1.5 D. M 1.5 C. M = 1.5 B. u # 1.5 D. A 75 Ha: M > 75 Ho: M