For each of the following experiments, decide whether the difference between conditions is statistically significant at

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For Each Of The Following Experiments Decide Whether The Difference Between Conditions Is Statistically Significant At 1 (66.59 KiB) Viewed 38 times

For each of the following experiments, decide whether the difference between conditions is statistically significant at the 0.05 level (two-tailed). Experimental Group Control Group (a) (b) (c) NE 50 20 50 ME 13 13 13 S²/ 3.4 3.4 3.0 Nc 50 80 50 Mc 12.2 12.2 12.2 sc 4.2 4.2 4.6 Determine the research hypothesis and null hypothesis for these tests. The research hypothesis is that the population mean for the experimental group is different from the population mean for the control group. The null hypothesis is that the population mean for the experimental group is the same as the population mean for the control group. Determine the cutoff score(s) on the comparison distribution for the t test (Use a comma to separate answers as needed. Round to three decimal places as needed.) Find the t score for experiment (a). For this problem, population 1 corresponds to the experimental group and population 2 corresponds to the control group. t=(Round to two decimal places as needed.) Decide whether the difference between conditions is statistically significant for experiment (a). Choose the correct answer below. A. Reject the null hypothesis. The difference is statistically significant at the 0.05 level. OB. Do not reject the null hypothesis. The difference is statistically significant at the 0.05 level. OC. Do not reject the null hypothesis. The difference is not statistically significant at the 0.05 level. OD. Reject the null hypothesis. The difference is not statistically significant at the 0.05 level. Find the t score for experiment (b). t=(Round to two decimal places as needed.) Decide whether the difference between conditions is statistically significant for experiment (b). Choose the correct answer below. A. Do not reject the null hypothesis. The difference is statistically significant at the 0.05 level. B. Reject the null hypothesis. The difference is statistically significant at the 0.05 level. OC. Do not reject the null hypothesis. The difference is not statistically significant at the 0.05 level. OD. Reject the null hypothesis. The difference is not statistically significant at the 0.05 level. Find the t score for experiment (c). t=(Round to two decimal places as needed.) Decide whether the difference between conditions is statistically significant for experiment (c). Choose the correct answer below. A. Reject the null hypothesis. The difference is statistically significant at the 0.05 level. OB. Reject the null hypothesis. The difference is not statistically significant at the 0.05 level. OC. Do not reject the null hypothesis. The difference is statistically significant at the 0.05 level. D. Do not reject the null hypothesis. The difference is not statistically significant at the 0.05 level.