What is the value of the test-statistic (the "t-test" value)?Student12OA.-9.60OB.-2.67OC.-3.20O D.-1.11Anxiety Before Movie25Anxiety After Movie18914

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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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One hundred teachers attended a seminar on mathematical problem solving. The attitudes of representative sample of 12 of the teachers were measured before and after the seminar. A positive number for change in attitude indicates that a teacher's attitude toward math became more positive. The twelve change scores are as follows. 4; 7; −1; 1; 0; 5; −2; 2; −1; 6; 5; −3 Part (a) What is the mean change score? (Round your answer to two decimal places.)
What is the mean of a sample? ○ The value that describes the highest and lowest variables. O The average value. O The value that shows up most often. O The average amount that each variable differs from the mean.
The first picture is the question and the second is the ones that I need help with. Thanks
topic is Hypothesis test for proportions. I already answered most of the question. Please help me fill the rest. Thanks
HW10Q8 PLEASE FIND AND LABEL TEST STAT, P VALUE, AS WELL THANK YOU!
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Describe a situation in your real life that repeated sample t-test is better than independent t-test
What is the value of z score ? Mean =180 Standard devaition=6 X =170 round answer to two decimal
The data represents the number of points received in a quiz. 9, 9, 10, 10, 10, 1 Mean- 8.166... Median- 9.5 What is a better measure of center? The mean or median and why?
Q4 Please answer it and explain

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What is the value of the test-statistic (the "t-test" value)? Student A.-9.60 OB.-2.67 OC.-3.20 OD.-1.11 Anxiety Before Movie 6 5 Anxiety After Movie 8 19