What statistic would be appropriate for a difference research question involving the comparison of two independent...
What statistic would be appropriate for a difference research question involving the comparison of two independent groups on a normally distributed continuous dependent variable?
my Answer: Independent samples T-Test. Is this correct? rationale please
Homework Answers
Yes, this is correct because it is given that the groups are independent and variables are normally distributed. We should be using Independent samples T-Test.
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What statistic would be appropriate for a difference research
question involving the comparison of two independent...
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...
The difference of two independent normally distributed random variables is also normally distributed. We have used...
The difference of two independent normally distributed random
variables is also normally distributed. We have used this fact in
many of our derivations. Now, consider two independent and normally
distributed populations with unknown variances σ 2 X and σ 2 Y . If
we get a random sample X1, X2, . . . , Xn from the first population
and a random sample Y1, Y2, . . . , Yn from the second population
(note that both samples are of...
An Independent Samples T Test is used to make an inference about whether two groups in...
An Independent Samples T Test is used to make an inference about whether two groups in the population have different averages on some quantitative measure or dependent variable. This test could be used to compare the average annual earnings of High School graduates, compared to Community College graduates For this potential research question, answer the following questions. Please use only numeric values in your answers to questions 1, 2 and 3 and a word to answer question 4 1) According...
An Independent Samples T Test is used to make an inference about whether two groups in...
An Independent Samples T Test is used to make an inference about whether two groups in the population have different averages on some quantitative measure or dependent variable. This test could be used to compare the average annual earnings of High School graduates, compared to Community College graduates For this potential research question, answer the following questions. Please use only numeric values in your answers to questions 1, 2 and 3 and a word to answer question 4 1) According...
In controlled comparison research, the observed relationship between an independent variable (X) and a dependent variable...
In controlled comparison research, the observed relationship between an independent variable (X) and a dependent variable (Y) may be caused by some other, uncontrolled compositional difference (Z). So, we always ask, “How else, besides the independent variable, are the groups I am comparing not the same?” For the hypothesis below, do the following: (i) Think up a plausible alternative causal variable. (ii) Describe how this variable might affect the relationship between the independent variable and the dependent variable. In a...
Write a research hypothesis for which the independent samples t-test will be appropriate. Clearly identify the...
Write a research hypothesis for which the independent samples t-test will be appropriate. Clearly identify the independent and dependent variables and two potential confounding factors.
-It would not be appropriate to use the Mann–Whitney U test when: a researcher is comparing...
-It would not be appropriate to use the Mann–Whitney U test when: a researcher is comparing two independent populations. the dependent variable is measured at the ordinal level. the assumptions for an independent-samples t test are not met. a researcher is comparing three or more groups on a normally distributed dependent variable. -Kia assesses people's levels of gratitude and stress that occur naturally to determine if a relationship exists between the two variables. Kia is using a(n): correlational design experimental...
a) which of the tests listed below would be the most appropriate test for the research...
a) which of the tests listed below would be the most appropriate test for the research question One-Sample Z-Test for a Mean, One-Sample T-Test for a Mean, One-Sample 2-Test for a Proportion. Two-Sample 2-Test for Difference of Means, Two-Sample T-Test for Difference of Means (Independenti Two-Sample T-Test for Difference of Means (Dependent). Two-Sample Z.Test for Difference of Proportions, Two-Sample F-Test for Variances, Goodness of Fit Independence Test One Way Analysis of Variance b) list the null and alternative hypotheses, Identify...
Match each research question below with the appropriate analysis: (independent samples t-test, dependent samples t-test, one-way...
Match each research question below with the appropriate analysis: (independent samples t-test, dependent samples t-test, one-way ANOVA, or Chi-Square analysis). 1. Do cereals with a grade of A have significantly fewer calories per serving compared to those with a grade of B? 2. Is there a significant difference in the number of grams of carbohydrates and grams of protein within specific cereals? 3. Is there a significant difference in the ratings from cereals of different manufacturing brands?? 4. Is there...
If we are testing the difference between the means of two normally distributed independent populations with...
If we are testing the difference between the means of two normally distributed independent populations with samples of n1 = 10, n2 = 11, the degrees of freedom for the t statistic is ______. 19 9 8 18
The difference of two independent normally distributed random
variables is also normally distributed. We have used this fact in
many of our derivations. Now, consider two independent and normally
distributed populations with unknown variances σ 2 X and σ 2 Y . If
we get a random sample X1, X2, . . . , Xn from the first population
and a random sample Y1, Y2, . . . , Yn from the second population
(note that both samples are of...
An Independent Samples T Test is used to make an inference about whether two groups in the population have different averages on some quantitative measure or dependent variable. This test could be used to compare the average annual earnings of High School graduates, compared to Community College graduates For this potential research question, answer the following questions. Please use only numeric values in your answers to questions 1, 2 and 3 and a word to answer question 4 1) According...
An Independent Samples T Test is used to make an inference about whether two groups in the population have different averages on some quantitative measure or dependent variable. This test could be used to compare the average annual earnings of High School graduates, compared to Community College graduates For this potential research question, answer the following questions. Please use only numeric values in your answers to questions 1, 2 and 3 and a word to answer question 4 1) According...
a) which of the tests listed below would be the most appropriate test for the research question One-Sample Z-Test for a Mean, One-Sample T-Test for a Mean, One-Sample 2-Test for a Proportion. Two-Sample 2-Test for Difference of Means, Two-Sample T-Test for Difference of Means (Independenti Two-Sample T-Test for Difference of Means (Dependent). Two-Sample Z.Test for Difference of Proportions, Two-Sample F-Test for Variances, Goodness of Fit Independence Test One Way Analysis of Variance b) list the null and alternative hypotheses, Identify...
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