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Instructions: Please solve each hypothesis testing problem and SHOW ALL WORK. 1. A recent study indicates...
A recent study suggested that drinking certain liquids before bed and hearing certain background noise (or...
A recent study suggested that drinking certain liquids before bed and hearing certain background noise (or the lack thereof) while sleeping can have an overall effect on the quality of sleep someone gets. Participants in week one drank a cup of green tea before bed and had no background noise for one night. For the second night, they drank a cup of green tea and played soothing background sounds. For the third night, they drank a cup of green tea...
The following data were collected from a repeated-measures study. Perform an ANOVA. Use a .05 alpha...
The following data were collected from a repeated-measures study. Perform an ANOVA. Use a .05 alpha level. (10 POINTS) Treatment A B G = 36 EX? = 192 4 4 8 T= 12 T= 24 SS = 4 SS 8 1) State the null hypothesis. 2) Calculate necessary statistics (USE AN ANOVA even though K=2, and a=.05). 3) Make a decision about your null hypothesis and explain what that decision means. 4) Make a conclusion about your IV and DV...
The results of the study are presented in the following data table. All scores are times...
The results of the study are presented in the following data table. All scores are times necessary to complete the paper-folding task, recorded in seconds Noise Type White Noise Participant Classical Music Nature Sounds Participant Totals A n - 5 B 3.43 3.34 3.76 3.65 3.53 с D 3.56 3.91 3.65 4.21 4.16 3.11 3.33 3.79 3.12 3.43 P 10.10 P = 10.58 P=11.20 P = 10.98 P = 11.12 k3 N=15 G-53.98 2X2 - 195.7798 E T = 17.71...
Problem 4. A researcher is comparing the effectiveness of two sets of instructions for assembling a book shelf A sa...
Problem 4. A researcher is comparing the effectiveness of two sets of instructions for assembling a book shelf A sample of 24 college students is obtained, and each participant is randomly assigned to one of the two groups. Half of the participants (n 12) are given both written and graphic instructions ("Written Graphic"), and the other half (n= 12) receives written instructions only ("Written"). The researcher measures how much time is needed for each participant to assemble the book shelf...
18. The following data were obtained from an inde- pendent-measures study comparing three treatment conditions. Treatment...
18. The following data were obtained from an inde- pendent-measures study comparing three treatment conditions. Treatment 11 III a. Use a wheth 3 8 N=12 1 4 G= 48 amon the sa EX = 238 3 6 4 1 6 averag b. Calcu study. M 2 T= 8 T 24 SS = 4 M= 4 М- 6 T= 16 SS = 2 SS= 8 21. To create a. Calculate the sample variance for each of the three samples. b. Use...
(Answers are given but could you please work through the problem and show me the steps?)...
(Answers are given but could you please work through the problem and show me the steps?) Chapter 10 Recently, a local newspaper reported that part-time students are older than full-time students. In order to test the validity of its statement, two independent samples of students were selected. Full-Time Part-Time (in years) 26 24 s 2 3 n 42 31 a. Give the hypotheses for the above. b. Determine the degrees of freedom. c. Compute the test statistic. d. Using...
Assignment 3: Hypothesis Testing for the Population Mean The purpose of this activity is to give...
Assignment 3: Hypothesis Testing for the Population
Mean
The purpose of this activity is to give you guided practice in
going through the process of a t-test for the population mean, and
teach you how to carry out this test using statistical
software.
Background:
A group of 75 college students from a certain liberal arts
college were randomly sampled and asked about the number of
alcoholic drinks they have in a typical week. The file containing
the data is linked...
0 2.00 A study showed that a woman shown in a photograph was judged as less...
0 2.00 A study showed that a woman shown in a photograph was judged as less attractive when the photograph showed a visible tattoo compared to the same photograph with the tattoo removed (Resenhoelt. Vila & Wiseman 2008). Suppose a similar experiment is conducted as a repeated-measures study. A sample of n 12 males looks at a set of 30 photographs of women and rates the attractiveness of each woman using a 5-point scale (5 most positive. One photograph appears...
10. A recent study of higher education measured the pro- portion of college students who work...
10. A recent study of higher education measured the pro- portion of college students who work in off-campus jobs for at least 20 hours a week. Four samples, each composed of 200 randomly selected students, were used to represent four types of institutions: large four-year state schools, small four-year state schools, large four-year private schools, and small four-year private schools. In the sample of 200 students from large state schools, 30 had such an off-campus job (15%), as compared to...
QUESTIONS You want to test which candy gets you the best ratings on student evaluations (0-10)....
QUESTIONS You want to test which candy gets you the best ratings on student evaluations (0-10). The first set of students gets no candy, the second gets black licorice, and the third gets skittles. You test 4 people in each group No Black Candy Licorice Skittles 4 3 N - 12 3 4 G48 1 3 6 EX2 - 238 5 4 1 6 8 24 T- M- SS- 16 4 2 6 2 4 8 a. State the null...
The following data were collected from a repeated-measures study. Perform an ANOVA. Use a .05 alpha level. (10 POINTS) Treatment A B G = 36 EX? = 192 4 4 8 T= 12 T= 24 SS = 4 SS 8 1) State the null hypothesis. 2) Calculate necessary statistics (USE AN ANOVA even though K=2, and a=.05). 3) Make a decision about your null hypothesis and explain what that decision means. 4) Make a conclusion about your IV and DV...
The results of the study are presented in the following data table. All scores are times necessary to complete the paper-folding task, recorded in seconds Noise Type White Noise Participant Classical Music Nature Sounds Participant Totals A n - 5 B 3.43 3.34 3.76 3.65 3.53 с D 3.56 3.91 3.65 4.21 4.16 3.11 3.33 3.79 3.12 3.43 P 10.10 P = 10.58 P=11.20 P = 10.98 P = 11.12 k3 N=15 G-53.98 2X2 - 195.7798 E T = 17.71...
Problem 4. A researcher is comparing the effectiveness of two sets of instructions for assembling a book shelf A sample of 24 college students is obtained, and each participant is randomly assigned to one of the two groups. Half of the participants (n 12) are given both written and graphic instructions ("Written Graphic"), and the other half (n= 12) receives written instructions only ("Written"). The researcher measures how much time is needed for each participant to assemble the book shelf...
18. The following data were obtained from an inde- pendent-measures study comparing three treatment conditions. Treatment 11 III a. Use a wheth 3 8 N=12 1 4 G= 48 amon the sa EX = 238 3 6 4 1 6 averag b. Calcu study. M 2 T= 8 T 24 SS = 4 M= 4 М- 6 T= 16 SS = 2 SS= 8 21. To create a. Calculate the sample variance for each of the three samples. b. Use...
Assignment 3: Hypothesis Testing for the Population
Mean
The purpose of this activity is to give you guided practice in
going through the process of a t-test for the population mean, and
teach you how to carry out this test using statistical
software.
Background:
A group of 75 college students from a certain liberal arts
college were randomly sampled and asked about the number of
alcoholic drinks they have in a typical week. The file containing
the data is linked...
0 2.00 A study showed that a woman shown in a photograph was judged as less attractive when the photograph showed a visible tattoo compared to the same photograph with the tattoo removed (Resenhoelt. Vila & Wiseman 2008). Suppose a similar experiment is conducted as a repeated-measures study. A sample of n 12 males looks at a set of 30 photographs of women and rates the attractiveness of each woman using a 5-point scale (5 most positive. One photograph appears...
10. A recent study of higher education measured the pro- portion of college students who work in off-campus jobs for at least 20 hours a week. Four samples, each composed of 200 randomly selected students, were used to represent four types of institutions: large four-year state schools, small four-year state schools, large four-year private schools, and small four-year private schools. In the sample of 200 students from large state schools, 30 had such an off-campus job (15%), as compared to...
QUESTIONS You want to test which candy gets you the best ratings on student evaluations (0-10). The first set of students gets no candy, the second gets black licorice, and the third gets skittles. You test 4 people in each group No Black Candy Licorice Skittles 4 3 N - 12 3 4 G48 1 3 6 EX2 - 238 5 4 1 6 8 24 T- M- SS- 16 4 2 6 2 4 8 a. State the null...
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