Answered: The evidence against the null…

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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Q3. Jissan is testing whether gasoline brand has any effect on gasoline mileage (miles driven by one tank). 5 cars is used for this test and each car used one tank of brand Khell and one tank of brand Gasoline Office. The results are as follows: Car no Khell Gasoline Office 1 28.3 29.2 2 27.4 28.4 29.1 28.2 4 28.7 28 5 29.4 29.6 Is there evidence to suggest a difference between average mileage numbers with two gasoline brands? Use %1 significance level. (Please consider 4 significant digits in your results)
A test is made of H0: u=5 vs Ha: u<5. The true value of u is 5, and is rejected. What type of error is this outcome? A. Type I error B. Type II error
Which hypothesis represents the statement of "no change" (or "no affect/difference"), that we assume to be true? A.The one hypothesis, H1 B.The null hypothesis, H0 C.The right hypothesis, H0 D.The alternative Hypothesis, H1
Which of these is not an assumption of the z test? a. The dependent variable is measured on a scale measure b. The distribution of the sample is normal c. Participants were randomly selected from the population d. The distribution of the population is approximately normal
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Need the P value.Answer the given question with a proper explanation and step-by-step solution. Please provide the answer using the math tool otherwise I give the downvote.
Suppose a researcher compares the means of two independent groups that have the same number of participants in each group. The researcher uses the .05 level of significance and obtains a calculated value of t of 2.11. At least how many participants must be in each group in order to reject the null hypothesis?A. 10B. 9C. 8D. 11
Express the null hypothesis and the alternative hypothesis in symbolic form. Use the correctsymbol (µ, p, Η) for the indicated parameter. An entomologist writes an article in a scientific journalwhich claims that fewer than 16 in ten thousand male fireflies are unable to produce light due to agenetic mutation. Use the parameter p, the true proportion of fireflies unable to produce light.
The values of P(Z≤−0.1) and P (Z≥0.1) are the same. Why?
Need the H0 and H1 values. Can use != for not equal to.
Surprisingly, a study found that children under stress reported fewer symptoms of depression and anxiety but scored higher on a Lie Scale (a measure of tendency to give socially desirable responses). The population mean for the Lie Scale for nonstressed children is 3.8. The sample of 24 children's scores are listed below. Test the hypothesis that children under stress are more likely to give socially desirable answers. Write a complete conclusion in the context of the problem. 2.9 3.3 5.0 3.7 3.9 3.7 3.4 4.3 4.2 3.8 4.7 4.1 4.3. 3.6. 4.6. 2.9. 4.2. 4.0. 4.5. 4.4 4.0. 3.5 4.4. 4.7
A null and alternative hypothesis are given. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. H0: σ ≥ 7 Ha: σ < 7 What type of test is being conducted in this problem? A. Two-tailed test B. Left-tailed test C. Right-tailed test

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The evidence against the null hypothesis mounts as the p-value gets: A. Larger and larger B. Smaller and smaller