After conducting an independent samples t-test, a researcher finds that the 95% confidence interval estimating the...
After conducting an independent samples t-test, a researcher finds that the 95% confidence interval estimating the difference between the treatment group and the control group is 2.37 ± 1.85. Which of the following is definitely true? Choose one of the 3 the choices.
A. The effect size of the comparison between groups is 3.7.
B. The mean of the treatment group is 2.37.
C. The difference between groups is significant.
Homework Answers
The correct answer is Option C. Based on these values, it can be concluded that the difference between groups is significant.
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A researcher conducted a single sample t-test on results of an experiment with n = 18 participants and the computed t = -2.28. What is the correct conclusion from this experiment if p < 0.05, 2-tails test is used for hypothesis testing? O A. The researcher failed to reject the null hypothesis and concluded that there is a significant treatment effect. O B. The researcher rejected the null hypothesis and concluded that there is a significant treatment...
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b) Perform a hypothesis test to test the claim that
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