Question

In: Psychology

After conducting an experiment, you report a p-value of less than .05 and an effect size...

After conducting an experiment, you report a p-value of less than .05 and an effect size of .82. Explain what this means.

Solutions

Expert Solution

The p-value shows, if the results are significant or not. Whereas, the effect size shows the extent to which they are significant or how much effect they have. A data with p-value lower than or equal to the level of significance (0.05, here) is considered to be significant. According to Cohen's criteria, if the effect size value (d) is 0.2 or close to it, then the effect size is small, if the value is 0.5, then the effect size is medium, if the value is 0.8, then the effect size is large.

Hence, in the question it is stated that the p-value is less than .05 which indicates that the results are statistically significant at 0.05 level of significance, with a large effect size of .82
This means that if we were trying to find the impact of a medicine on anxiety (for example) in the experiment, then the results have shown to have an impact of the medicine on anxiety, i.e., the results were statistically significant. Now, we know that the medicine is effective but how much? This is shown by the effect size of .82, which indicates the magnitude at which the medicine was effective, i.e., the medicine had large effect or impact on anxiety.

Hayet Jeridi answered 2 hours ago
Next > < Previous

Related Solutions

If Levene's test p value is higher than .05 but the p value in the original...
If Levene's test p value is higher than .05 but the p value in the original test was less than .05, what does that mean? If that a good thing or bad thing? I am comparing variance for two samples for an two independent samples t- test.
1. If you see a p-value that is less than your cutoff, do you: (a) Reject...
1. If you see a p-value that is less than your cutoff, do you: (a) Reject the H0 (b) Reject the H1 (c) Fail to reject the H0 (d) Fail to reject the H1 (e) Accept the H0 (f) Accept the H1 6. Let X be a random variable with E(X) = 1, Var(X) = 4. I observe X¯ = 1.1 from a sample of size n. I am doing a hypothesis test of whether or not H0 : µ...
1. If you see a p-value that is less than your cutoff, do you: (a) Reject...
1. If you see a p-value that is less than your cutoff, do you: (a) Reject the H0 (b) Reject the H1 (c) Fail to reject the H0 (d) Fail to reject the H1 (e) Accept the H0 (f) Accept the H1 6. Let X be a random variable with E(X) = 1, Var(X) = 4. I observe X¯ = 1.1 from a sample of size n. I am doing a hypothesis test of whether or not H0 : µ...
You desire to estimate p for a binomial process. You know that p is less than...
You desire to estimate p for a binomial process. You know that p is less than 0.65 and greater than 0.45. Find n, the sample size required, to yield 95% confidence of estimating the true proportion, p, within .02. Please show all work!
Show that the window size must be less than or equal to half the size of...
Show that the window size must be less than or equal to half the size of the sequence number space for SR protocols. Mathematically prove it.
Show that the window size must be less than or equal to half the size of...
Show that the window size must be less than or equal to half the size of the sequence number space for SR protocols. Mathematically prove it.
Find the p-value of the test. A) Less than 0.25% B) Between 0.25% and 0.5% C)...
Find the p-value of the test. A) Less than 0.25% B) Between 0.25% and 0.5% C) Between 0.5% and 1% D) Between 1% and 2.5% E) Between 2.5% and 5% F) Between 5% and 10% G) Between 10% and 15% H) Between 15% and 20% I) Between 15% and 20% J) Bigger than 20%. Are births really evenly distributed across the days of a week? Here are data on 700 births in a hospital: Day Sun. Mon. Tue. Wed. Thu....
1. A researcher chooses to use ? = .01 rather than ?. = 05. What effect...
1. A researcher chooses to use ? = .01 rather than ?. = 05. What effect does this have on the probability of making Type I and Type II errors? 2. In most research situations, we use a two-tailed test instead of a one-tailed test (even in the case of a directional hypothesis). Why?
1a) Explain why we reject the null hypothesis when the p-value is less than the level...
1a) Explain why we reject the null hypothesis when the p-value is less than the level of significance? b) Explain to someone unfamiliar with statistics how to tell whether a statistical test is left, right, or two tailed. Explain what to look for in the wording of a hypothesis test and with the alternate hypothesis. c) Why can we never truly accept the null hypothesis?
• describe the effect on a portfolio’s risk of investing in assets that are less than...
• describe the effect on a portfolio’s risk of investing in assets that are less than perfectly correlated; • explain the selection of an optimal risky portfolio and the capital allocation line (CAL); • describe and interpret the minimum-variance frontier and efficient frontier of risky assets. • explain the Separate Property.
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT