7. Fifteen accounting majors had an average grade of 92 on a finance exam. Seven marketing majors averaged 85, while ten finance majors averaged 93 on the same exam. What is the weighted mean for the 32 students taking the exam? a. 90.00 e. None of the above. c. 91.48 d. Impossible to determine without more information. b. 90.78 8. The state of Maryland has license plates with three numbers followed by three letters. How many different license plates are possible? a. 17,576,000 c. 108 d. 972 e. 1,757,600 b.9 9. A survey of top executives revealed that 35% of them regularly read Time magazine, 20% read Newsweek and 40% read US. News & World Report. Ten percent read both Time and US. News & World Report. What is the probability that a particular top executive reads either Time or U.S News & World Report regularly? e. 1.00 b. 0.65 d. 0.06 e. None of the above. a. 0.85 10. Consideration is being given to forming a Super Ten Football Conference. The top 10 football teams in the country, based on past records, would be members of the Super Ten Conference. Each team would play every other team in the conference once during the season and the team winning the most games would be deelared the national champion. How many games would the conference commissioner have to schedule cach year? a 90 e. 125 b. 50 d. 14 e. 45 11. What is the 25th percentile, given the following data? 49 49 51 53 54 54 55 55 46 47 c. 51 d. 53 59 a. 47 b. 49 e. 54 12. You are given the following five values: 11,6, 10, 6, and 7. What is o? a 5.5 d. 10 b. 2.3452 e. 2.0976 c.8 13. What is the range for the following sample of March electric bill amounts for all- electric homes of similar sizes (to the nearest dollar)? $212, S191, S176, S129, $106, $92, $108, S109, $103, S121, SI75, and $194. a. $100 b. $130 e. None of the above. c. $120 d. $112 X Roughly speaking, what are half of the observations always greater than? a. Median. b. Mode. e. Mean. d. Geometric mean. e. None of the above. HX Which of the following is true about a histogram? a. It provides a pictorial representation of the information contained in a frequency distribution. b. The larger the class interval or width, the smaller the amount of information lost. c. It is found in many over-the-counter drugs to help relieve allergy symptoms. d. It is simply another name for an ogive. e. All of the above