Jamovi HW4 - Kya Andrade

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Jamovi Homework 4 13 points For any question that requires you to perform a function in Jamovi, make sure you provide relevant output from Jamovi underneath the corresponding question in order to receive credit. Jamovi assignments should be completed using the homework documents as a template with the answers filled in underneath each question. The completed word documents/PDFs should be submitted on Canvas through the Assignments tab. Problem 1 It’s commonly known that the average human body temperature is 98.6 degrees F, right? A group of scientists is interested in testing whether people’s average body temperatures actually match this often-cited value. They used smartphones to measure the body temperature of a sample of people who wore wearables (Apple Watches, Fitbits, etc.) to track their body temperatures. Data similar to their findings are in the file temperature.csv. Open this data file in jamovi (click on the three horizontal lines in the upper left-hand corner, then Open, then Browse to where you saved the file on your computer). Using a single sample t-test with an alpha of .05 and a two-tailed test, examine whether the average body temperature of the sample was significantly different from the predicted average body temperature of the general population, 98.6 (µ = 98.60) using Jamovi. 1) Relevant/necessary output (2 points) Paste the results of the single sample t-test from Jamovi, including a descriptive statistics table (1 point) and the results of the single sample t-test (1 point). If your tables are too wide, resize them to fit on the page. One Sample T-Test 95% Confidence Interval Statist ic df p Mean differenc e Lowe r Uppe r Effec t Size temperatur e Student' s t -0.648 26. 0 0.52 3 -0.226 - 0.94 3 0.49 1 Cohen' s d - 0.12 5 Note. Hₐ μ ≠ 98.6
Jamovi Homework 4 13 points Descriptives N Mea n Media n SD SE temperatur e 2 7 98.4 98.7 1.8 1 0.34 9 2) Non-APA statement of decision about the null (3 points) Define the null and make a decision about it by doing the following: ● State the null hypothesis (in plain language) (1 point) The average body temperature measured by smartphones in people wearing wearables is equal to 98.6 degrees Fahrenheit. ● State your decision about the null hypothesis (1 point) We fail to reject the null hypothesis ● State the rationale for your decision about the null hypothesis (1 point) ● | 0.523 | < 2.056 therefore you fail to reject the null hypothesis 3) APA-style report (8 points) Write an APA style report of your findings. See the “APA-Style Formatting Guidelines” handout for a reminder of how to format an APA-style report. Your report should include each of the following: ● State the type of statistical analysis used (1 point) ● Report descriptive statistics for each group (0.5 point each) ● Report whether the difference between the groups was significant or non- significant (1 point) ● Describe the direction of the effect (1 point) ● Report the value of the test statistic with its degrees of freedom (1 point) ● Report the precise p-value to three decimals (unless jamovi reports p = .000, in which case you use p < .001) (1 point) ● Report a measure of effect size and a relevant 95%CI (0.5 point each) ● Correct APA style formatting (1 point)
Jamovi Homework 4 13 points Using a single sample t-test we found that the average human body temperature is (M = 98.4, SD = 1.81) was lower but not significantly different from the average population (µ = 98.60, t(26) = 0.35, p = .52, d = 0.13, 95%CLµdiff [-0.94,0.49].
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