An experiment was run to determine whether four specific firing temperatures affect the density of a certain type of brick. A completely randomized experiment led to the following data: Temperature Density 21.7 100 21.8 21.9 21.6 21.7 21.4 21.8 125 21.7 21.5 21.4 150 21.9 21.8 21.6 21.5 175 21.9 21.7 21.8 21.4 The research hypothesis is that firing temperature affect the density of the bricks. Use a=0.05. Analysis of Variance Test Method DF H-Value P-Value Not adjusted for ties 3 4.55 0.208 Adjusted for ties 3 4.70 0.195 What are the test statistic value, decision and conclusion? O 4.7; Do not reject Ho: Data do not show sufficient evidence to say that at least one median of brick density is different than the other, at the 5% significance level. O 4.55; Do not reject Ho: Data do not show sufficient evidence to say that at least ono median of brick density is different than the other, at the 5% significance level. O 0.195; Do not reject Ho: Data do not show sufficient evidence to say that at least one median of brick density is different than the other, at the 5% significance level. O 0.157; Do not reject Ho: Data show sufficient evidence to say that temperature does not affect brick density, at the 5% significance value.

Which of the following can increase effect size? Select one: O a. increase the distance between means and increase the sample size O b. decrease the variability and increase the distance between means O c. decrease the variability and increase the sample size

You may need to use the appropriate technology to answer this question. Submitted The following table contains observed frequencies for a sample of 200. Column Variable Row Variable A B C P 20 44 50 Q 30 26 30 Test for independence of the row and column variables using a = 0.05. State the null and alternative hypotheses. Ho: The column variable is independent of the row variable. H: The column variable is not independent of the row variable. Ho: Variable P is not independent of variable Q. H: Variable P is independent of variable Q. Ho: Variable P is independent of variable Q. H: Variable P is not independent of variable Q. : The column variable is not independent of the row variable. Ho: : The column variable is independent of the row variable. Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value %3D State your conclusion. Reject Ho. We conclude that the column and row variables are…

Consider the following study in which standing and supine systolic blood pressures were compared. This study was performed on twelve subjects. Their blood pressures were measured in both positions. Subject Standing Supine1 132 1362 146 1453 135 1404 141 1475 139 1426 162 1607 128 1378 137 1369 145 14910 151 15811 131 12012 143 150I. state the hypothesis II. find the test statisticIII. what is the dfIV. if the p-value associated with test statistics is 0.144 and alpha is 0.05, can we say that On average there is a difference between the blood pressures in the two populations

Use the following sample to evaluate H0: μ = 65, at significance level α = 0.05. 53 75 68 53 57 12 4 10 45 94 23 73 9 41 79 92 90 46 49 71 State the correct test and your conclusion. T-test. Reject Ho. T-test. Fail to reject Ho. Z-test. Fail to reject Ho. Z-test. Reject Ho.

Given the following data and using Jamovi, test (at an alpha of 0.05) whether type of music influences heart rate (measured in beats per minute, bpm).   Participant Rock Classical Heavy Metal ROW MEANS = 1 70 64 90 74.67 2 78 69 85 77.33 3 80 72 67 73 4 82 65 100 82.33 5 81 67 120 89.33 6 80 58 98 78.67 GROUP MEANS = 78.5 65.83 93.33   Total mean = 79.22   What are the degrees of freedom for between persons? ________ What is the critical value (from table): ___________________

An independent-measures study uses two samples, each with n = 7, to compare two treatment conditions. The t statistic for this study will have degrees of freedom equal to the following value. A. 14 B. 13 C. 12 D. 6