tabcaps lockesc1t test p-valueLeast estimated ES(Choose one) <Q(a) Order the methods by their estimated effect sizes (ES) from least to greatest.AO The test of Method CExplanationThe test of Method B(Choose one) ▼Method AMethod B(b) Consider the followingMethod Cr the difference of means between a controlgroup and Method C, ar Method Dfference of means between a control groupand Method B. Suppose that the sample sizes used in each were the same and thateach test were done using the 0.05 significance level. If the true effect sizes for themethods are equal to the estimated effect sizes above, which test would have greaterpower?2CheckW0.011S3E0.028D$40.021(Choose one)RF5T0.008Greatest estimated ES< (Choose one) ▼A6YY&7HUXⒸ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center*83J(9 A university is examining four methods to supplement instruction. The méthods have been analyzed in four separate studies, one for each method. In eachstudy, the final exam scores of a control group of students who didn't receive any supplemental instruction were compared to those of a group who received theparticular method of supplemental Instruction. A one-tailed, independent-samples t test (with the assumption of equal variances) was performed in each studyto see if the mean for the supplemental instructional group was significantly greater than the mean for the control group.The table below summarizes the four studies. The subscript "1" refers to a control group, and the subscript "2" refers to a group receiving the particular methodof supplemental instruction. The value s, is the pooled sample standard deviation. Note that this value was not reported in one of the studies.esc1QSample meansPooled samplestandard deviationSample sizest test p-valueLeast estimated ES(Choose one) ▼Method AMethod B(b) Method CMethod DExplanation2WCheckMethod A#x₁ = 633*2=70Sp=10.4n₁=251₂=250.011(Choose one)FMethod B#x₁ = 644x₂ = 70Sp=9.6n₁=20"₂=200.028(a) Order the methods by their estimated effect sizes (ES) from least to greatest.DMethod Cx₁ =64%x₂=695Sp=9.3n₁=30n₂=300.021ving two tests: a test for the difference of means between a controlleast for the dillonnan a manna hataloMethod Dㅏx₁ = 63Ax₂ = 69Greatest estimated ES(Choose one) < (Choose one) ▼6Not reportedn₁ =257₂=250.008&7X83Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility(9)0EspañolO10A

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Answered: t test p-value Least estimated ES…

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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1) Below are data of foam indexes for three different espresso makers. Test the hypothesis that foam indexes differ between the three. (Note: these data are highly kurtotic, so normality cannot be assumed.) Set a at 0.05. Which test should you use and why? State the hypothesis, provide the critical value and test statistic and state your conclusions. Hyper-Espresso Method (HIP) I-Espresso System (IT) 56.19 Bar Machine (BM) 36.64 70.84 39.65 46.68 36.67 35.35 40.11 37.74 73.19 35.96 57.78 38.52 48.61 33.52 37.12 37.33 72.77 21.02 24.81 65.04 32.68 48.33 34.18 62.53 23.08 54.26
What is the optimal time for a scuba diver to be on the bottom of the ocean? That depends on the depth of the dive. The U.S. Navy has done a lot of research on this topic. The Navy defines the "optimal time" to be the time at each depth for the best balance between length of work period and decompression time after surfacing. Let x = depth of dive in meters, and let y = optimal time in hours. A random sample of divers gave the following data. 16.1 22.7 25.3 1.98 32.2 38.3 51.3 20.5 y 2.78 1.88 1.03 0.75 2.38 2.20 (a) Find Ex, Ey, Ex, Ey", Exy, and r. (Round r to three decimal places.) Ex= Ey= Ey? - Exy = (b) Use a 1% level of significance to test the claim that p < 0. (Round your answers to two decimal places.) critical t= Conclusion O Fail to reject the null hypothesis. There is sufficient evidence that p < 0. O Fail to reject the null hypothesis. There is insufficient evidence that p < 0. Reject the null hypothesis. There is sufficient evidence that p < 0. Reject the null hypothesis.…
An independent-measures study produces t(9) = +3.00, p < 0.05. For this study, if effect size is measured with r2, then r2= 0.50. True or False
A local teacher wants to see if teaching writing in different ways impacts student learning. She has two classes of similar characteristics. In one class, she will use Teaching Strategy A and in the other class she will use Teaching Strategy B. She collects student test scores and is ready to run her analysis in Microsoft Excel. Which test should she choose from the menu? Descriptive Statistics t-Test: Paired Two Sample for Means t-Test: Two-Sample Assuming Equal Variance Fourier Analysis
What is the optimal time for a scuba diver to be on the bottom of the ocean? That depends on the depth of the dive. The U.S. Navy has done a lot of research on this topic. The Navy defines the "optimal time" to be the time at each depth for the best balance between length of work period and decompression time after surfacing. Let x = depth of dive in meters, and let y = optimal time in hours. A random sample of divers gave the following data.x 12.1 26.3 32.2 38.3 51.3 20.5 22.7y 2.48 2.18 1.48 1.03 0.75 2.38 2.20 a) Find the predicted optimal time in hours for a dive depth of x = 22 meters. (Round your answer to two decimal places.)______ hr b) Find an 80% confidence interval for y when x = 22 meters. (Round your answers to two decimal places.)lower limit= ____ hrupper limit =____hr c) Find a 90% confidence interval for ? and interpret its meaning. (Round your answers to three decimal places.)lower limit =upper limit=
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What is the optimal time for a scuba diver to be on the bottom of the ocean? That depends on the depth of the dive. The U.S. Navy has done a lot of research on this topic. The Navy defines the "optimal time" to be the time at each depth for the best balance between length of work period and decompression time after surfacing. Let x = depth of dive in meters, and let y = optimal time in hours. A random sample of divers gave the following data. 15.1 26.3 31.2 38.3 51.3 20.5 22.7 y 2.68 2.38 1.48 1.03 0.75 2.38 2.20 (a) Find Ex, Ey, Ex², Ey², Exy, and r. (Round r to three decimal places.) Σχ = Ey = Ex? = Ey? = Σχy r = (b) Use a 1% level of significance to test the claim that p < 0. (Round your answers to two decimal places.) t = critical t = Conclusion O Fail to reject the null hypothesis. There is insufficient evidence that p < 0. O Fail to reject the null hypothesis. There is sufficient evidence that p < 0. O Reject the null hypothesis. There is insufficient evidence that p < 0. O…
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