Which of the following statements is not true?A. In general, you can reject the null hypothesis when x' is very large.B. A segmented bar graph is useful in observing when two variables may beindependent.C. For a chi-square test of independence, the larger the x statistic, the weakerthe association between the two variables.6.D. In general, a very large x value matches with a very small, and significant,P-value.7.The table on the left lists the percentage of U.S. motor vehicle traffic fatalitiesin alcohol-related crashes by age group in 2002. Suppose that in a randomsample of 1000 alcohol-related motor vehicle traffic fatalities for the followingyear, the distribution was as shown in the table on the right.Percent of Alcohol-Related Fatalitiesin 2002Number of Alcohol-Related Fatalitiesin 2003AgeAgeYounger Than 2014.5Younger Than 2015620-2924.520-2922330-3923.330-3924640-4919.140-4917150 and Older18.650 and Older204Now suppose you use a chi-square goodness-of-fit test in order to test the nullhypothesis that the age distribution of alcohol-related motor vehicle trafficfatalities in 2003 is the same as the age distribution in 2002. You computex2 = 7.37. At the 5% significance level, which of the following is anappropriate conclusion?A. Because the P-value is less than .05, you reject the null hypothesis.B. Because the P-value is less than .05, you fail to reject the null hypothesis.C. Because the P-value is greater than .05, you reject the null hypothesis.D. Because the P-value is greater than .05, you fail to reject the null hypothesis.E. Because the conditions for a chi-square goodness-of-fit test are notsatisfied, an appropriate conclusion can not be drawn.

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Answered: Which of the following statements is…

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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Which of the following is NOT true about what a t test does? It assess the causality between two numeric values. It is used when the IV is nominal and DV is continuous. It compares two groups' means. It can be used with single-sample or between-subject designs.
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Annie conducts a study to examine the differences in stress levels between pet owners and non-pet owners. She conducts a two-tailed test and tells that she rejected the null hypothesis. Therefore, which of these statements is true? Question 8 options: Pet owners have more stress than non-pet owners. Pet owners have less stress than non-pet owners. Pet owners' and non-pet owners' stress levels differ, but it is not known how they differ. Pet owners' and non-pet owners' stress levels do not differ.
(i) State the hyptheses. (ii) Sketch a scatter plot tat best represents the data. (iii) Compute the value of the correlation coefficient. Round the answer to at least three decimal places. (iv) Find the P-value. Round the answer to at least four decimal places. Test the significance of r at α=0.05. Determine whether to reject or not reject the null hypothesis.
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You wish to test the following claim (Ha) at a significance level of a = 0.02. For the context of this problem, 44 = PostTest - PreTest where the first data set represents a pre-test and the second data set represents a post-test. (Each row represents the pre and post test scores for an individual. Be careful when you enter your data and specify what your 4i and u2 are so that the differences are computed correctly.) H.:Hd = 0 0 + Prl : "H You believe the population of difference scores is normally distributed, but you do not know the standard deviation. You obtain the following sample of data: pre-test post-test 44.8 52.3 47.6 44.1 56.6 51.2 50.4 54.8 55.4 58.9 38 44.1 32.1 36 41.7 52.6 36.9 45.9 50.8 55 52.5 65.8 35.7 38.5 39.3 30.8 36.4 33.4 53.7 60 What is the test statistic for this sample? test statistic = (Report answer accurate to 4 decimal places.) What is the p-value for this sample? p-value = (Report answer accurate to 4 decimal places.) The p-value is... O less than (or…
You wish to test the following claim (Ha) at a significance level of a = 0.02. For the context of this problem, d PostTest – PreTest where the first data set represents a pre-test and the second data set represents a post-test. (Each row represents the pre and post test scores for an individual. Be careful when you enter your data and specify what your x1 and x2 are so that the differences are computed correctly.) H.: Hd Ha: Hd + 0 %3| You believe the population of difference scores is normally distributed, but you do not know the standard deviation. You obtain the following sample of data: pre-test post-test 50.8 42.8 57.6 46.5 59.5 52.9 62.4 49.2 57.5 55.8 52.3 54.3 62.2 49.7 58.5 56.7 61.1 60.3 60.8 54.5 65.1 64 62.9 59 55.9 49.3 60.9 51.1 64.4 62.9 50.8 41.3 59 56.4 56.1 49 66 54 60.1 52.9 62.1 59.9 55.6 46.8 56.5 53 60.3 55 55 48.4 What is the test statistic for this sample? test statistic = (Report answer accurate to 4 decimal places.)
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