1. The grade in Psychological Statistics of a class in a preliminary exam are as follows:GradesNo. ofDeviation(CI)studentsdfdfd?< cfwwww90 - 9287 - 89384 - 861081 - 831278 - 80153075 - 7772 - 749469 - 712C=n =fd =fd² =a. Solve for the following: Use the formula for grouped data.b. a. iс. b. Qзd. c. Q1e. d. Qf. s?g. SEXh. cvf.e. s

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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2. (MMC 6.43). The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the motivation, attitude toward school, and study habits of students. Each score ranges from 0 to 200. The mean attitude score for U.S. college students is about 110, and the standard deviation is about 25. A teacher who suspects that older students have better attitudes toward school gives the SSHA to 25 students who are at least 30 years of age. Their mean score is = 118.3. a. Assuming that o = 25 for the population of older students, carry out a test of Họ: H = Ha:u > 110 Report the P-value of your test and state your conclusion clearly. = 110 b. What are the required assumptions in part (a)?
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1. The grade in Psychological Statistics of a class in a preliminary exam are as fo No. of students Grades Deviation (CI) d fd fd2 90 – 92 3 87 - 89 5 84 – 86 10 81 – 83 12 78 - 80 15 75 – 77 72 – 74 4 69 – 71 2 C = n = fd = fd² =