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What is the range for the following set of scores? 3, 7, 9, 10, 12 O 3 O 12 O 10 O 9

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Related textbook solutions

Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208

Related questions

A sample of n = 25 scores has M = 20 and s2 = 9. What is the sample standard deviation?

Ā 

  1. 3

  2. 4.5

  3. 9

  4. 81

In a law school class, the entering students averaged about 160 in the LSAT; the SD was about 8. The histogram of LSAT scores followed the normal curve reasonably well.

(LSAT scores range from 120 to 180, among all test-takers, the average is around 150 and the SD is around 9.)

a. about what percentage of the class scored below 166?

b. one student was 0.5 SDs above the class average on the LSAT. About what percentage of the students in the class had lower scores than he did?

Almost all medical schools in the United States require applicants to take the Medical College Admission Test (MCAT). On one exam, the scores of all applicants on the biological sciences part of the MCAT were approximately Normal with mean 9.2 and standard deviation 2.6. For applicants who actually entered medical school, the mean score was 10.5 and the standard deviation was 1.4.

(a) What percent of all applicants had scores higher than 13?Ā 

(b) What percent of those who entered medical school had scores between 9 and 12?Ā 

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