Jovelin conducted an experiment wherein she tested to see whether a sign written in red versus...
Jovelin conducted an experiment wherein she tested to see whether a sign written in red versus green ink would affect how people remember the message. She found no significant difference in her participants’ memory scores. In Jovelin’s write-up of the results, she would state that she:
A. rejected the null hypothesis
B. proved an alternative hypothesis
C. failed to reject the null hypothesis
D. found an alpha (probability) more than .05
Homework Answers
Option C) is correct.
| C. failed to reject the null hypothesis |
Since, she found no signficant difference in her participants’ memory scores.
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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...
Dr. Brown would like to study how energy drinks affect mental alertness. A sample of n = 9 college students is obtained, and each student's performance on a visual tracking task is measured before and after drinking Red Bull. The average score dropped by M 14 points after the meal with SS = 1152 for the difference scores. Calculate the t-value and determine if there is a significant difference in performance before drinking versus after drinking using an alpha of...
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writ the response in which you state your agreement or disagreement
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