An IQ test was administered to twelve students and the scores were as follows: Student 1 2 3 4 5 6 7 8 9. 10 11 12 IQ score 87 102 94 81 115 75 74 116 98 114 96 100 Assume that IQ is normally distributed with mean u and variance o?. 1. If o²=196, construct a 95% confidence interval for u, the true mean IQ in the population 2. What sample size is necessary to ensure an interval width w = 10? 3. Now consider o? unknown. Is the claim that u is less than 100 justified? Perform a test at the a= 0.10 level of significance, by the following 5 steps: Step 1. Hypotheses and significance level: Но: Ha: a = Step 2. Test Statistic and its sampling distribution under Ho: Step 3. Observed value of the test statistic: Step 4. P-value under Ho: Step 5. Decision and conclusion (interpretation of the result):

An IQ test was administered to twelve students and the scores were as follows: Student 1 2 3 4 5 6 7 8 9. 10 11 12 IQ score 87 102 94 81 115 75 74 116 98 114 96 100 Assume that IQ is normally distributed with mean u and variance o?. 1. If o²=196, construct a 95% confidence interval for u, the true mean IQ in the population 2. What sample size is necessary to ensure an interval width w = 10? 3. Now consider o? unknown. Is the claim that u is less than 100 justified? Perform a test at the a= 0.10 level of significance, by the following 5 steps: Step 1. Hypotheses and significance level: Но: Ha: a = Step 2. Test Statistic and its sampling distribution under Ho: Step 3. Observed value of the test statistic: Step 4. P-value under Ho: Step 5. Decision and conclusion (interpretation of the result):

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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