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essica is a research analyst at HealthCare Solutions. She is investigating the satisfaction levels of patients who have undergone a specific medical procedure. Patients are
essica is a research analyst at HealthCare Solutions. She is investigating the satisfaction levels of patients who have undergone a specific medical procedure. Patients are asked to rate their satisfaction with the overall care they received on a scale from 1=Poor to 7=Excellent. Jessica now wants to determine if the perceived level of patient satisfaction significantly differs between patients who have private insurance and those who are covered by public health insurance. Jessica conducts an independent samples t-test to test the hypothesis of interest. The following results are generated using SPSS: Independent Samples Test Levene's Test for Equality of Variances t-test for Equality of Means F. Sig. t df Sig. (2-tailed) Mean Difference Std Error Difference Lower 95% CI Upper 95% CI Equal variance assumed 4.862 0.028 0.769 532 0.442 0.599 Equal variances not assumed 2.549 534.2 0.011 0.599 0.779 0.235 -0.927 2.125 0.138 1.059 What conclusion would you reach about the assumption regarding homogeneous variances across the two groups of interest and the difference in means? The two variances can be assumed to be identical; the two means are significantly different. The two variances cannot be assumed to be identical; the two means are not significantly different. The two variances cannot be assumed to be identical; the two means are significantly different. The two variances can be assumed to be identical; the two means are not significantly different
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