This week we will be working on t-tests. We will use this data to test the...
This week we will be working on t-tests. We will use this data to test the means of Group 1 and Group 2 using an Independent Samples t-test.
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Case number |
Score |
Group |
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1 |
3 |
1 |
|
2 |
4 |
1 |
|
3 |
3 |
1 |
|
4 |
4 |
1 |
|
5 |
5 |
1 |
|
6 |
6 |
1 |
|
7 |
5 |
2 |
|
8 |
5 |
2 |
|
9 |
6 |
2 |
|
10 |
5 |
2 |
|
11 |
7 |
2 |
|
12 |
8 |
2 |
Develop a null and alternate (research) hypothesis for your analysis
Homework Answers
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This week we will be working on t-tests. We will use this data
to test the...
1. When do we use an independent groups t-test? a. b. c. d. When we are...
1. When do we use an independent groups t-test? a. b. c. d. When we are comparing means from one sample that has been measured twice. When we are comparing means from two different samples. When we are comparing a sample mean to a population mean. When we are comparing two population means. 2. Which of the following is true regarding the use of t-tests for true experiments versus quasi-experimental designs? a. b. We use the same t-test whether it...
Please use a two tailed test and a= .05 for all tests One-sample t-test A researcher...
Please use a two tailed test and a= .05 for all tests
One-sample t-test A researcher was interested in examining the effect of exercise on happiness levels among college students. The average college student happiness levels is u = 30. A sample of 5 individuals was selected and asked to exercise for three weeks. And then, they were asked to report their happiness scores. Can he conclude that exercise influences happiness levels ? Happiness 37 32 33 36 32 1)...
1. The average score on IQ tests is 100, with a standard deviation of 15. One...
1. The average score on IQ tests is 100, with a standard deviation of 15. One of your clients scored 134. What percent of the population is likely to score higher? Group of answer choices 98.81% 27.36% 1.16% 48.81% 2. You work in the admission department of a small liberal-arts college in the Midwest. Scores from a standardized test are used as the primary method of determination of eligibility. The mean of that standardized test is 609, and the standard...
Design your own study using one of the following statistical tests: one-sample t-test, paired samples t-test, independen...
Design your own study using one of the following statistical tests: one-sample t-test, paired samples t-test, independent samples t-test, or ANOVA. Give (1) your sample, (2) research question, (3) the appropriate test with the null and research hypotheses, and (4) the two variables, including (a) how you would measure both variables and (b) each variable’s level of measurement. Be creative. Do not include data in your response.
Data Conduct an independent samples t-test (a.k.a., between-subjects design). Each sample should have at least n...
Data
Conduct an independent samples t-test (a.k.a., between-subjects design). Each sample should have at least n=8 individuals. What to turn in: 1. What is your research question? 2. State the null (Ho) and alternative (H1) hypotheses. 3. Conduct the hypothesis test using an alpha level of .05, and state your conclusion (Reject Ho/Fail to Reject Ho) regarding the original hypotheses. 4. Calculate and interpret a measure of effect size (est. Cohen's d or r2) and a 95% confidence interval. Subject...
Lab question Table 5A-1 Data Table for Benedict's and Lugol's Tests Benedict's Test Lugol's Test Origia...
Lab question
Table 5A-1 Data Table for Benedict's and Lugol's Tests Benedict's Test Lugol's Test Origia Final Color Color Before Boiling Tube After After 1. Water 2. Starch 3. Glucose elue owrm 5. Sucrose 6. Onion juiceGen Crenve 7. Potato slice l ecue | Green | WhLte一一1tra-areen 8. Milk Did the results for each test support your hypotheses? Did your results support your null hypothesis? Did the results for cach test agree with your predictions? Explain any discrepancies. PART 2-LUGOL'S...
want to test the hypothesis that students who study one week before score greater than students...
want to test the hypothesis that students who study one week before score greater than students who study the night before, giving you the following hypotheses: Null Hypothesis: H1 = H2, Alternative Hypothesis: H1 > H2. A random sample of 31 students who indicated they studied early shows an average score of 86.19 (SD = 4.358) and 35 randomly selected procrastinators had an average score of 84.58 (SD = 6.631). Perform a two independent samples t-test assuming that early studiers...
What are we stating if we reject the null hypothesis is an independent samples t-test?
What are we stating if we reject the null hypothesis is an independent samples t-test?
c. Run a two-sample paired t-test for means to test your hypothesis, using a confidence level...
c. Run a two-sample paired t-test for means to test your hypothesis, using a confidence level of 95%. To show whether it is a one-tail test or a two-tail test, highlight the significant values in the Excel output, including your p-value, critical t, and t stat. and write a sentence or two to interpret the results. should the null hypothesis be rejected? In EXCEL PLEASE TABLE C9-2: Wife and Husband Feedback Scores on 1-7 Scale + Same Day or Not...
Given the following sample information, test the hypothesis that the treatment means are equal at the
Given the following sample information, test the hypothesis that the treatment means are equal at the .05 significance level. Treatment 1 Treatment 2 Treatment 3 3 9 6 2 6 3 5 5 5 1 6 5 3 8 5 1 5 4 4 1 7 5 6 4 1. State the null hypothesis and the alternate hypothesis. 2. What is the decision rule? 3. Compute SST, SSE, and SS total. 4. Complete an ANOVA table. 5. State your decision...
1. When do we use an independent groups t-test? a. b. c. d. When we are comparing means from one sample that has been measured twice. When we are comparing means from two different samples. When we are comparing a sample mean to a population mean. When we are comparing two population means. 2. Which of the following is true regarding the use of t-tests for true experiments versus quasi-experimental designs? a. b. We use the same t-test whether it...
Please use a two tailed test and a= .05 for all tests
One-sample t-test A researcher was interested in examining the effect of exercise on happiness levels among college students. The average college student happiness levels is u = 30. A sample of 5 individuals was selected and asked to exercise for three weeks. And then, they were asked to report their happiness scores. Can he conclude that exercise influences happiness levels ? Happiness 37 32 33 36 32 1)...
Data
Conduct an independent samples t-test (a.k.a., between-subjects design). Each sample should have at least n=8 individuals. What to turn in: 1. What is your research question? 2. State the null (Ho) and alternative (H1) hypotheses. 3. Conduct the hypothesis test using an alpha level of .05, and state your conclusion (Reject Ho/Fail to Reject Ho) regarding the original hypotheses. 4. Calculate and interpret a measure of effect size (est. Cohen's d or r2) and a 95% confidence interval. Subject...
Lab question
Table 5A-1 Data Table for Benedict's and Lugol's Tests Benedict's Test Lugol's Test Origia Final Color Color Before Boiling Tube After After 1. Water 2. Starch 3. Glucose elue owrm 5. Sucrose 6. Onion juiceGen Crenve 7. Potato slice l ecue | Green | WhLte一一1tra-areen 8. Milk Did the results for each test support your hypotheses? Did your results support your null hypothesis? Did the results for cach test agree with your predictions? Explain any discrepancies. PART 2-LUGOL'S...
want to test the hypothesis that students who study one week before score greater than students who study the night before, giving you the following hypotheses: Null Hypothesis: H1 = H2, Alternative Hypothesis: H1 > H2. A random sample of 31 students who indicated they studied early shows an average score of 86.19 (SD = 4.358) and 35 randomly selected procrastinators had an average score of 84.58 (SD = 6.631). Perform a two independent samples t-test assuming that early studiers...
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