8 F. b| 13 ョ|^,黑, I Normal T Aa A AaBbCcI AaBbCcI AABBCCD AaB AaBbCcI I No Spac... Heading 2 Subtitle ,日,可一,四一川三三E Paragraph Styles Part 1. Independent Samples t Researchers have reported that elderly people who own pets are less likely to visit the doctor after upsetting events than those who do not own pets. A reseacher compares a sample of elderly pet owners to a group that does not owm pets but is otherwise matched for age and income. The data below are the number of visits to the doctor in the course of a year. Enter the data in excel, save, read it into JASP. Test to deternmine if these two groups differ significantly in their doctor visits (use alpha = .05). Pet owners: 8 1 3 3 4 3 5 2 11 5 No-pets: 10 5 10 7 5 4 9 6 12 9 5 8 n=_22 _ What is the design of this study? people dependent variable SI What is the IV? pet owners What is the DV? number of doctor Is the hypothesis in purple one-tailed or two-tailed? State the Hypotheses in symbols and words: in words: in words: Create an Excel data file organized by IV and DV. Variables: 1) pet ownership and 2) DR visits (This time do not code pet ownership as a dummy variable (1,2); instead, write pet or nopet as the group categories in the Excel file.) Open this dataset in JASP. Perform an Independent Samples t-test by selecting T-Tests > Classical > Independent Samples t-test. Select DR visits as the variable and pet ownership as the grouping variable. Check off Location Parameter, 95% Confidence Interval, and Descriptives options. Fill in the following from the Descriptives output table. Pet owners Non-owners Means of visits: Std. Deviation Std. Error of Mean (United StateS) Accessibility: Good to go Fo 68°F VI 4 五0 F4 F5 F7 F11 de AaBbCcl T Normal I No Spac... Heading 2 Title Subtitle A. Paragraph Styles Create an Excel data file organized by IV and DV. Variables: 1) pet ownershin and 2) DR visits (This time do not code pet ownership as a dummy variable (1,2): instead, write pet or nonet as the group categories in the Excel file.) Open this dataset in JASP. Perform an Independent Samples t-test by selecting T-Tests > Classical > Independent Samples t-test. Select DR visits as the variable and pet ownership as the grouping variable. Check off Location Parameter, 95% Confidence Interval, and Descriptives options. Fill in the following from the Descriptives output table. SE Pet ownerS Non-owneS Means of visits: Std. Deviation Std. Error of Mean Before we look at the results of the t-test, let's plot the means and confidence intervals. Check off the Descriptives plots option below Additional Statistics. This creates a graph with the mean for each group plotted with bars out a distance that represents the 95% confidence interval for each group mean. Describe the graph in terms of the amount of overlap of the bars (e.g., approx percentage of overlap) Now, let's test the Equality of Variances between groups. Under Assumptions Check, check off the Equality of variances option. If the p value is greater than .05 the variances are equal - use the student's t-test yalue we already calculated. If p is less than .05, wve will need to use the Welch t-test, which can be calculated by checking off Welch under Tests. Fill in the information below using the appropriate test: Buisn Is the assumption of equality of variances met according to this test? Fill in these values from the tables: Sig. or p level (2-tailed) = Std. Error of Difference = Mean Difference= 95% Confidence Interval is to The CI shows that the true mean difference between the groups lies within this range of values. Write a sentence reporting results of this statistical test using APA stvle- sionificance & renort means Accessibility. Good to go D Focus ed States) | 直 0 ASUS F4 F5 F7 F8 F11 95