ZuoTi.Pro
Question

A researcher conducts a study in which the population variance of difference scores between two groups...

A researcher conducts a study in which the population variance of difference scores between two groups is unknown. What type of t-test is most appropriate for this study?

Question 6 options: one–independent sample t-test two–independent sample t-test related samples t-test There is not enough information to answer this question.

math   Statistics-And-Probability   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

The information is not given whether the two groups are dependent or independent. Hence,

There is not enough information to answer this question.

Option D is correct.

0 0
Add a comment
Know the answer?
Add Answer to:
A researcher conducts a study in which the population variance of difference scores between two groups...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • Question 12 2 pts If a researcher reports a “statistically significant difference” between two groups after...

    Question 12 2 pts If a researcher reports a “statistically significant difference” between two groups after conducting an independent-samples t test, this implies that: Cohen's d is at least 0.50. the difference between the two groups is unlikely to have occurred by chance if the null hypothesis is true. the difference between the two groups is unlikely to have occurred by chance if the null hypothesis is false. there is a large difference between the two groups.

  • 3. A researcher is interested in comparing the average self-esteem scores between college educated adults and...

    3. A researcher is interested in comparing the average self-esteem scores between college educated adults and non-college educated adults. She collects a sample from each population to be in the study, which of the following tests would be appropriate for this analysis? i. Paired t test ii. Correlation Independent Samples T test iv. One Sample t test iii.

  • A two–independent sample t-test is computed when mean differences are compared between two or more groups...

    A two–independent sample t-test is computed when mean differences are compared between two or more groups sampled from a population with an unknown variance. Question 2 options: True or False

  • QUESTION 52-Conceptual Set 1. A researcher wants to study exercise as a way of reducing anger...

    QUESTION 52-Conceptual Set 1. A researcher wants to study exercise as a way of reducing anger expression. He plans to throw water balloons at participants, measure their anger using behavioral cues (e.g., number of swear words, redness of face, etc.), make them do 20 pushups, then measure their anger again. He wants to see if there are differences before and after 20 pushups. Which t-test should he use? QUESTION 53-Conceptual Set 1. Why should he (the researcher from question 52)...

  • A researcher reports that the mean difference between two groups is 20.12 and the estimated standard...

    A researcher reports that the mean difference between two groups is 20.12 and the estimated standard error for the difference is 2.83. Hence, the conclusion must be to reject the null hypothesis for a two-tailed test at a .05 level of significance. Question 4 options: True or false False

  • Question 2 (0.5 points) A researcher conducts a study to determine if the mean score for...

    Question 2 (0.5 points) A researcher conducts a study to determine if the mean score for a sample of n - 30 participants is significantly different from a hypothesized population mean. If the researcher conducts a two-tailed test at an a = .05 level of significance, what is the decision rule for this study? Reject H, at a = .05 if t < - 2.045 or t > 2.045 Reject Ho at a = .05 if t < -2.093 or...

  • a Test 8, 9, 10 [Compatibility Mode] Mailings Review View - A = E.E. E a...

    a Test 8, 9, 10 [Compatibility Mode] Mailings Review View - A = E.E. E a + 1 Aa Bbccddee AaBbccddee Aa BbCCD AaBbccddee AaBbc abccdd A = = = = E4 Normal No Spacing Heading1 Heading 2 Title Subtitle 29. Two researchers analyze the same data set Researcher Auses a two-independent sample t test and decides to retain the null hypothesis. Researcher B uses a related samplest test and decides to reject the null hypothesis. Which of the following...

  • QUESTION 11 You run an independent samples t-test between two groups, and find a t-statistic of...

    QUESTION 11 You run an independent samples t-test between two groups, and find a t-statistic of t=1.67. Is this sufficient to reject the null hypothesis? Assume α=0.05 and a one-sided test. Yes, > 1.67 is sufficient to reject the null. No, > 1.67 is not sufficient to reject the null. Not enough information. 2 points    QUESTION 12 In a dependent samples t-test, the sample sizes must be equal. True False 2 points    QUESTION 13 In an independent samples...

  • A researcher conducts an experiment consisting of two groups—Group 1, non-smokers, and Group 2, ex-smokers. Group...

    A researcher conducts an experiment consisting of two groups—Group 1, non-smokers, and Group 2, ex-smokers. Group 1 consists of 10 participants, while Group 2 has 12 participants. If the researcher conducts a two-tailed two-independent sample t-test, what will the degrees of freedom and the critical values at a 0.05 level of significance be? (Round your critical values to three decimal places.) degrees of freedom critical value (smaller value) critical value (larger value)

  • Question 3 (0.5 points) A researcher conducts a study to determine if the mean score for...

    Question 3 (0.5 points) A researcher conducts a study to determine if the mean score for a sample of n= 30 participants is significantly different from a hypothesized population mean. The mean score for the sample was 9.4 with a standard deviation of 2. The hypothesized population mean is 8. If the researcher conducts a two-tailed test at an a = .05 level of significance, the correct decision is to.... reject the null hypothesis because t calculated is located in...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT