6. For a statistics course containing 10 students, the maximum point total for the quarter was 200. Which of the following is NOT true? a. In s symmetric distribution, the mean and median are equal. b. About 50% of the scores in a distribution are between the first and third quartiles. C. In a symmetric distribution, the median is halfway between the first and third quartiles. d. The median is always greater than the mean. 7. Which of the following statements is (are) true? a. The median is resistant to extreme values. b. The mean is resistant to extreme values. c. The standard deviation is resistant to extreme values. d. Both a and c. 8. A set of data is normally distributed with a mean of 100 and a standard deviation of 25. Approximately what percent of the data would you expect to be between 75 and 100? a. 48% b. 16% 50% d. 34% 9. The cumulative frequency of the 3" bin in a frequency distribution table represents: a. The number of data values that are less than the maximum value of the 3" bin. b. The percentage of data that falls into the 3" bin. The cumulative deviation of the 3" bin in percent. d. The frequency of data values that are larger than the minimum value of the 3" bin. 10. If X -N(400, 25 ) then the standard deviation equals: a. 400 b. 25 5 d. 625 11. A researcher interested in the age at which women have their first child surveyed a simple random sample of 250 women who have one child and found an approximately normal distribution with a mean age of 27.3 and a standard deviation of 5.4. According to the Empirical rule, approximately 95%% of women had their first child between the ages of a. 11.1 years and 43.5 years b. 16.5 years and 38.1 years c. 21.9 years and 32.7 years d. 25.0 years and 29.6 years