Homework Help is Here – Start Your Trial Now!
Math
Statistics
A team of researchers is interested in whether writing one's thoughts and feeling can affect physical health. This kind of writing is called expressive writing. Twenty students were recruited to take part in the study.15 students were randomly assigned to the expressive writing group to write about their thoughts and feelings. The other 15 students were randomly assigned to a control group where they wrote about their plan for the day. One month later all the students their overall level of physical health on a scale from O = very poor health to 100 =perfect health. The expressive writing group had a mean of 65 and an estimated variance of 87. The control group had a mean of 70 and an estimated variance of 90 (Use a significant level of 5% to determine the effect of expressive writing on physical health). This example is a t test of ("dependent samples" or "two independent samples" or "single sample") Population 1 can be students who engage in expressive writing (writing about one's feelings) ("True" or "False") Population 2 can be students who write about a neutral topic (writing about any topic) ("True" or "False") The alternative hypothesis states The null hypothesis states The total sample size is and the sample size for each group is The SS for the expressive writing group is The SS for the control writing group is The mean difference for this example is The pool variance is The estimated standard error is The total degree of freedom is The t cutoff(s) at 5% in this example is (are) (negative t) and (positive t) The t statistic is The decision is the null hypothesis ("reject" or "fail to reject") The Cohen's d is and represent effect size ("small" or "medium" or "large") (do a Cohen's d if applicable) With a 95% confidence interval and df = 18, we estimate that the mean difference between the two populations is somewhere between (use the negativet to get the answer) and (use the positive t get the answer) (hint: use the estimated standard error from this example)

A team of researchers is interested in whether writing one's thoughts and feeling can affect physical health. This kind of writing is called expressive writing. Twenty students were recruited to take part in the study.15 students were randomly assigned to the expressive writing group to write about their thoughts and feelings. The other 15 students were randomly assigned to a control group where they wrote about their plan for the day. One month later all the students their overall level of physical health on a scale from O = very poor health to 100 =perfect health. The expressive writing group had a mean of 65 and an estimated variance of 87. The control group had a mean of 70 and an estimated variance of 90 (Use a significant level of 5% to determine the effect of expressive writing on physical health). This example is a t test of ("dependent samples" or "two independent samples" or "single sample") Population 1 can be students who engage in expressive writing (writing about one's feelings) ("True" or "False") Population 2 can be students who write about a neutral topic (writing about any topic) ("True" or "False") The alternative hypothesis states The null hypothesis states The total sample size is and the sample size for each group is The SS for the expressive writing group is The SS for the control writing group is The mean difference for this example is The pool variance is The estimated standard error is The total degree of freedom is The t cutoff(s) at 5% in this example is (are) (negative t) and (positive t) The t statistic is The decision is the null hypothesis ("reject" or "fail to reject") The Cohen's d is and represent effect size ("small" or "medium" or "large") (do a Cohen's d if applicable) With a 95% confidence interval and df = 18, we estimate that the mean difference between the two populations is somewhere between (use the negativet to get the answer) and (use the positive t get the answer) (hint: use the estimated standard error from this example)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Question

Please help me with the following question

A team of researchers is interested in whether writing one's thoughts and feeling can affect physical health. This kind of writing is called expressive writing. Twenty students were recruited to take part in the study.15 students were randomly assigned to the expressive writing group to write about their thoughts and feelings. The other 15 students were randomly assigned to a control group where they wrote about their plan for the day. One month later all the students their overall level of physical health on a scale from 0 = very poor health to 100 =perfect health. The expressive writing group had a mean of 65 and an estimated variance of 87. The control group had a mean of 70 and an estimated variance of 90 (Use a significant level of 5% to determine the effect of expressive writing on physical health). This example is a t test of ("dependent samples" or "two independent samples" or "single sample") Population 1 can be students who engage in expressive writing (writing about one's feelings) ("True" or "False") Population 2 can be students who write about a neutral topic (writing about any topic) ("True" or "False") The alternative hypothesis states The null hypothesis states The total sample size is and the sample size for each group is The SS for the expressive writing group is The SS for the control writing group is The mean difference for this example is The pool variance is The estimated standard error is The total degree of freedom is The t cutoff(s) at 5% in this example is (are) (negative t) and (positive t) The t statistic is The decision is the null hypothesis ("reject" or "fail to reject") The Cohen's d is and represent effect size ("small" or "medium" or "large") (do a Cohen's d if applicable) With a 95% confidence interval and df = 18, we estimate that the mean difference between the two populations is somewhere between (use the negative t to get the answer) and (use the positive t get the answer) (hint: use the estimated standard error from this example)
Transcribed Image Text:A team of researchers is interested in whether writing one's thoughts and feeling can affect physical health. This kind of writing is called expressive writing. Twenty students were recruited to take part in the study.15 students were randomly assigned to the expressive writing group to write about their thoughts and feelings. The other 15 students were randomly assigned to a control group where they wrote about their plan for the day. One month later all the students their overall level of physical health on a scale from 0 = very poor health to 100 =perfect health. The expressive writing group had a mean of 65 and an estimated variance of 87. The control group had a mean of 70 and an estimated variance of 90 (Use a significant level of 5% to determine the effect of expressive writing on physical health). This example is a t test of ("dependent samples" or "two independent samples" or "single sample") Population 1 can be students who engage in expressive writing (writing about one's feelings) ("True" or "False") Population 2 can be students who write about a neutral topic (writing about any topic) ("True" or "False") The alternative hypothesis states The null hypothesis states The total sample size is and the sample size for each group is The SS for the expressive writing group is The SS for the control writing group is The mean difference for this example is The pool variance is The estimated standard error is The total degree of freedom is The t cutoff(s) at 5% in this example is (are) (negative t) and (positive t) The t statistic is The decision is the null hypothesis ("reject" or "fail to reject") The Cohen's d is and represent effect size ("small" or "medium" or "large") (do a Cohen's d if applicable) With a 95% confidence interval and df = 18, we estimate that the mean difference between the two populations is somewhere between (use the negative t to get the answer) and (use the positive t get the answer) (hint: use the estimated standard error from this example)
Expert Solution
steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS