The scores on a Criminal Justice test at USC are known to be Normally distributed with a mean of 78 and a standard deviation of 10.
(1) Jackie has a good day and scores a 90 on her test. What is the percentile of Jackie’s score – that is, what percentage of the class did she score higher than? Draw a graph that illustrates her score.
The scores on a Criminal Justice test at USC are known to be Normally distributed with...
Scores by women on the SAT-1 test are normally distributed with a mean of 988 and a standard deviation of 202. Scores by women on the ACT test are normally distributed with a mean of 20.9 and a standard deviation of 4.6. If a women gets a SAT score that is the 77th percentile, find her actual SAT score and her equivalent ACT score.
a.) Test scores are normally distributed with a mean of 60 and a variance of 225. Joe scored at the 90th percentile which means that his score was? b.) Suppose X is normally distributed with mean 4 and standard deviation 4. Find the probability that 2X exceeds 7. c.) Test scores are normally distributed with a mean of 60 and a standard deviation of 15. Joe scored at the 95th percentile which means that his score was d.) a random...
Scores on a standard test are normally distributed with a mean of 38.7 and a standard deviation of 7. Find the 90th percentile of score. please show your works with explanation
Solve the problem. Scores on a test are normally distributed with a mean of 78 and a standard deviation of 14. What is the standard score ( 2 score) for an exam score of 66 ? -0.86 -0.67 0.67
Suppose scores on an IQ test are normally distributed. If the test has a mean of 100 and a standard deviation of 10, what is the probability that a person who takes the test will score between 90 and 110?
Professor Blockhus gives two different statistics tests, but one test is harder than the other. Scores on test A are normally distributed with a mean score of 78 and a standard deviation of 6. Scores on test B are also normally distributed but with a mean score of 65 and a standard deviation of 9. If Erik scored an 79 on test B, what percent of the class scored below him? That is, what is his percentile on test B.
1. The scores on a nationwide aptitude test are normally distributed, with a mean of 80 and a standard deviation of 12. (convert raw score to z score) a. What percentage of aptitude scores are below a score of 65?
Scores on an endurance test for cardiac patients are normally distributed with µ= 254 and σ =18. A) What is the probability a patient will score above 272? B) What percentage of patients score below 218? C) What score does a patient at the 78th percentile receive?
6. In 2007 the scores on the College Aptitude Test (C. A.T.) were distributed normally with mean 500 and standard deviation 60, briefly N (500, 60). Find the 75th percentile for the CAT. 520.0000 605.4431 458.1174 540.4694 D7 In 2007 the scores on the College Aptitude Test (C. A.T.) were distributed normally with mean 500 and standard deviation 60, briefly N (500, 60). Find the Z score for a CAT score of 450. -.5631 -.8333 .6733 1.0833
Exam grades: Scores on a statistics final in a large class were normally distributed with a mean of 78 and a standard deviation of 7. Use the TI-84 PLUS calculator to answer the following. Round the answers to at least two decimals. (a) Find the 34" percentile of the scores. (b) Find the 68th percentile of the scores. (C) The instructor wants to give an A to the students whose scores were in the top 11% of the class. What...