6. A study was conducted to examine the effect of pets in stressful situations. Fifteen subjects...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
6. A study was conducted to examine the effect of pets in stressful situations. Fifteen subjects were randomly assigned to each of three groups to do a stressful task alone (the control group), with a good friend present, or with their dog present. The subject's mean heart rate (in beats per minutes) during the task is one measure of the effect of stress. The data has is the mean heart rates during stress with a pet (P), with a friend (F) and for the control group (C). Pet 69.169 Control Friend 80.369 99.692 87.446 83.4 70.169 102.15 90.015 4 75.985 99.046 80.277 75.477 88.015 68.862 86.446 87.231 92.492 64.169 91.754 91.354 97.538 100.87 87.785 7 85 101.06 77.8 2 72.262 62.646 81.6 58.692 84.738 89.815 79.662 84.877 98.2 69.231 73.277 76.908 69.538 84.523 86.985 70.077 70.877 97.046 65.446 This data is in the homework and calendar website called "Stress". a. Make a side by side box plot of the heart rates by the three groups. To do this in R use: plot(Rate Group,data=Stress) Does there seem to be a difference in the heart rates of the three groups? Do any of the groups show outliers or extreme skewness? b. We want to test if there is a difference in the mean heart rates for the three groups. Give the null hypothesis of this test. c. Does the data suggest that there is a difference among the three groups? Use a = 0.05. d. If there seems to be a difference, complete a Bonferroni pairwise test to determine which or if all the means are different from each other. 6. A study was conducted to examine the effect of pets in stressful situations. Fifteen subjects were randomly assigned to each of three groups to do a stressful task alone (the control group), with a good friend present, or with their dog present. The subject's mean heart rate (in beats per minutes) during the task is one measure of the effect of stress. The data has is the mean heart rates during stress with a pet (P), with a friend (F) and for the control group (C). Pet 69.169 Control Friend 80.369 99.692 87.446 83.4 70.169 102.15 90.015 4 75.985 99.046 80.277 75.477 88.015 68.862 86.446 87.231 92.492 64.169 91.754 91.354 97.538 100.87 87.785 7 85 101.06 77.8 2 72.262 62.646 81.6 58.692 84.738 89.815 79.662 84.877 98.2 69.231 73.277 76.908 69.538 84.523 86.985 70.077 70.877 97.046 65.446 This data is in the homework and calendar website called "Stress". a. Make a side by side box plot of the heart rates by the three groups. To do this in R use: plot(Rate Group,data=Stress) Does there seem to be a difference in the heart rates of the three groups? Do any of the groups show outliers or extreme skewness? b. We want to test if there is a difference in the mean heart rates for the three groups. Give the null hypothesis of this test. c. Does the data suggest that there is a difference among the three groups? Use a = 0.05. d. If there seems to be a difference, complete a Bonferroni pairwise test to determine which or if all the means are different from each other.
Expert Answer:
Posted Date:
Students also viewed these mathematics questions
-
Oriole Company just began business and made the following four inventory purchases in June: June 1 174 units $ 1044 June 10 232 units 1624 June 15 232 units 1856 June 28 174 units 1566 $ 6090 A...
-
Consider the entrepreneur described in Section 14.1 (and referenced in Tables 14.114.3). Suppose she funds the project by borrowing $750 rather than $500. a. According to MM Proposition I, what is...
-
Eva Stone's luxurious home in Georgetown, a neighborhood in Washington, DC, was recently gutted in a fire. Her living and dining rooms were destroyed completely, and the damaged personal property had...
-
Deacon Co. reported annual net sales for 2007 and 2008 of \($665,000\) and \($747,000\), respectively. Its year-end balances of accounts receivable follow: December 31, 2007, \($61,000\) ; and...
-
Collins was trustee for Indolent under the will of Indolents father. Indolent, a middle-age doctor, gave little concern to the management of the trust fund, contenting himself with receiving the...
-
Exercise 4 (16 marks) Two methods for measuring the molar heat of fusion of water are being compared. Ten measurements made by method A have a mean of 6.02 kilojoules per mole (kJ/mol) with a...
-
Write this report properly by hand written. Name of the Experiment Estimation of copper in the supplied solution using standardized sodium thiosulphate solution. Theory When KI is added to a solution...
-
For this assignment, please watch How to Get Away with Murder season 2 episode 11. It is on Netflix, YouTube, Google Play, AppleTV, and Amazon Prime. Questions: 1) What is a plea hearing? 2) What...
-
Cysco Corp has a budget of $1,206,000 in 2020 for prevention costs. If it decides to automate a portion of its prevention activities, it will save $104,000 in variable costs. The new method will...
-
Approach these journals as (a) an opportunity to reflect upon and apply what you learn each week based on the assigned readings, discussions, and activities, and (b) an opportunity to share your...
-
What is the Null Hypothesis (Ho) for this experiment? Diameter of Air Pocket to nearest 0.5 mm Photosynthesis Experiment using a Carbon Source Replicate light/+NaHCO3 light/+NaHCO3 + breath 1 6.4 9.2...
-
k On January 1, 2024, Wright Transport sold four school buses to the Elmira School District. In exchange for the buses, Wright received a hote requiring payment of $528,000 by Elmira on December 31,...
-
? ?? Alston Chemical Company currently operates three manufacturing plants in Colorado, Utah, and Arizona. Annual carbon emissions for these plants in the first quarter of 2018 are 180,000 metric...
-
In the current year, the City of Omaha donates land worth $500,000 to Ace Corporation to induce it to locate in Omaha and create an estimated 2,000 jobs for its citizens. a. How much income, if any,...
Study smarter with the SolutionInn App