and 22. 14.22.10. Given N = 2000 , (A)= 1500 , (B) = 100and(AB ) = 350test the consistency of the data.y ote

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Answered: and 22. 14. 22.10. Given N = 2000 , (A…

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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Solve the problem. 14) 14) Elaine gets quiz grades of 81, 71, and 72. She gets a 87 on her final exam. Find the weighted mean if the quizzes each count for 10% and the final exam counts for 70% of the final grade. A) 80.8 B) 79.7 C) 77.8 D) 83.3 Use the empirical rule to solve the problem.
Let the height data (105)represent sample. Use an appropriate statistical test to check whether the population mean is different from 170 cm.Use α = 0.05.Also, write a substantive conclusion and explanation. Use an appropriate graph to check if data is normally distributed. Do it in R commander.
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87 582 B/s l? 4. Suppose that only 10 students in had taken the Nabatieh campus midterm. Which of the following could be an example of their test scores? Justify by finding their median. а. 97,96,94,90,80,82,68,66,64,62 b. 78,75,78,80,79,81,86,85,88,80
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Justin wants to know whether a commonly prescribed drug does improve the attention span of students with attention deficit disorder (ADD). He knows that the mean attention span for students with ADD who are not taking the drug is 2.3 minutes long. His sample of 12 students taking the drug yielded a mean of 4.6 minutes. Justin can find no information regarding σx , so he calculated s2x =1.96. a. Identify the independent and dependent variables. b. In a sentence, state the null hypothesis being tested. c. Using symbols, state the null and alternative hypotheses. d. Determine the critical region using a one-tailed test with alpha = .05. e .Conduct the hypothesis test (Do the math and compare the t-critical and t-obtained values). f. State your conclusions in terms of H0 (Should you reject the H0 or fail to reject/accept the H0). g. Based on your analysis, is there a relationship between the drug and attention span?
14.
To test whether the mean time needed to mix a batch of material is the same for machines produced by three manufacturers, the Jacobs Chemical Company obtained the following data on the time (in minutes) needed to mix the material. Compute the values below (to 2 decimals, if necessary). Sum of Squares, Treatment Sum of Squares, Error a. Use these data to test whether the population mean times for mixing a batch of material differ for the three manufacturers. Use a = 0.05. Mean Squares, Treatment 0000 Mean Squares, Error Calculate the value of the test statistic (to 2 decimals). 1 17 23 21 19 What conclusion can you draw after carrying out this test? - Select your answer - Manufacturer 2 28 26 31 27 + 3 18 17 21 20 The p-value is - Select your answer - What is your conclusion? - Select your answer - b. At the a = 0.05 level of significance, use Fisher's LSD procedure to test for the equality of the means for manufacturers 1 and 3. Calculate Fisher's LSD Value (to 2 decimals).

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and 22. 14. 22.10. Given N = 2000 , (A ) = 1500 , (B ) = 100 and (AB ) = 350 test the consistency of the data. y ote