Bom the wean of 110 a) 2.50 bekve de mean wean b) 2.50 above Grace received a gr
ID: 3060221 • Letter: B
Question
Bom the wean of 110 a) 2.50 bekve de mean wean b) 2.50 above Grace received a grade of 75 on er cey exam Jn received a grade of 80 on h Law exam Jan clans hi reame to clasa his rade·mere ottanting tw,Grace's nle. The ewn grade to the chemstry esam s 70 with a standard deviation of S and QUESTIONS,NAND IS REFER TO THE FOLLOWING INFORMATION "en gnde tr the law esam k 75 wth as andard devitin or 4. 13. The a seore oe Jn's Law esam 14. The a-score oe Grace's Chemiry exam I5. Is Jens chim correct? d) S b) 125 b) 1.25 e)4 d) 5 b) Yes, sinse his a score grade s higher than Grace's a-score grade e) No, sice Grace's a-score grade is higher than Jinis a-score grade. d) No, since the chss mean i e) insufficient information 80 is higher than 75 in Grace's chss is Agraph of aarnlative fequency distrbuton scaled ain) a) vertical bar chart b) ogive c) stem-and-leaf displky d) skewed dstrbution 16. 17. "In a distrbution whose shape is skewed negatively, the postion of the median is to the right of the mean." This statement: a) Ahways True b) Sometimes True e) Never True d) depends on the achual from For question 18 to 22 use the following table. The table represents some of the results of the SAT Percentile 110 120 125 130 35 50 60 75 80 90 99 18. Determine the 1 decile. Score-1320 3651380 400- 410- 474T 5101570159516501750 a) 10 b) 320 c)365 d) 474 e) 650 19. Determine Pso d)474e) 750 b) 50 c)375 a) 10 The PERCENTILE RANK of the score 410 a) 35 b) approx 45 20. c) 410d) 50Explanation / Answer
13.
Mean grade of Law Exam = 75
Standard deviation of grade of Law Exam = 4
Jim's grade = 80
Z-score of Jim = (x - mean)/ std dev
= (80 - 75) / 4 = 1.25
So, the correct option is (b)
14.
Mean grade of Chemistry Exam = 70
Standard deviation of grade of Law Exam = 5
Grace's grade = 75
Z-score of Jim = (x - mean)/ std dev
= (75 - 70) / 5 = 1
So, the correct option is (a)
15.
(b) Yes, since his z-score grade is higher than Grace's z-score grade.
16.
A graph of cumulative frequency distribution is called an
b) ogive
17.
For negative skewed distribution, the median is greater than mean. so,
The correct answer is
(a) Always True