Solution1.Ho: The average life span today is not greater than 72 years.Ha: The average life span today is greater than 72 years.0.052.3. t-test (one-tailed)4. df=n-1df=100-1=99t₁ = 1.66 Tabular value5. Computation using the formula for sample mean compared with population meantc =Substitute the given values in the formulatc(x-μ)√nS=F = 69= 72μn = 100S = 8.9NOW(69-72)√/1008.9tc = -3.376. Decision: Since t computed value of -3.37 is less than tabular value of 1.66.Therefore, we reject our null hypothesis (Ho).7. Formulate conclusion: The average life span today is greater than 72 years. A personality test was administered to 17 males and 12 females in a publicschool. With the data given below, test whether the females differed in theirpersonality from that of the males. Higher scores indicate better personality traitsusing 0.01 level of significance?Females- 18, 19, 22, 24, 25, 25, 26, 27, 30, 32, 36, 36Males-13, 16, 17, 19, 20, 20, 21, 21, 24, 24, 26, 27, 28, 30, 32, 32, 33

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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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8 students took a test. 3 of them scored 4, 4 and 7 marks respectively. Given that the median and mode is 5, the upper quartile is 8 and the largest score is thrice the smallest score, find the scores of the other 5 students.
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A psychologist wanted to know if students in her class were more likely to cheat if they were low achievers. She divided her 60 students into three groups (low, middle, and high) based on their mean exam score on the previous three tests. She then asked them to rate how likely they were to cheat on an exam if the opportunity presented itself with a very limited chance for consequences. The students rated their desire to cheat on a scale ranging from 1-100, with lower numbers indicating less desire to cheat. The data: Achievement_Group Cheat 1 20 1 40 1 49 1 50 1 51 1 51 1 52 1 53 1 58 1 42 1 48 1 48 1 52 1 55 1 55 1 56 1 59 1 67 1 80 1 79 2 19 2 25 2 20 2 29 2 24 2 32 2 25 2 27 2 30 2 55 2 40 2 25 2 27 2 35 2 42 2 30 2 30 2 34 2 40 2 27 3 60 3 65 3 69 3 78 3 79 3 80 3 80 3 90 3 95 3 50 3 55 3 55 3 60 3 69 3 70 3 70 3 88 3 90 3 90 3 91 Before opening the data,…

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