11. Look at the following output for an independent t-test:

Which is the most appropriate answer?
We can be 95% confident that:

(a) The population mean difference is 27.7

(b) The population mean difference will fall between 36.21 and 19.18

(c) The population mean will fall between 19.46 and 35.93

(d) The results will be important

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Independent Samples Test Levene's Equal Test for Equality of Variances t-test for Equality of Means Std. 95% Confidence Interval of the Difference F Sig. t df Sig. (2-tailed) Mean Difference Error Difference Lower Upper -6.807 38 .000 -27.7000 4.0692 -35.9377 -19.4623 variances assumed Equal 34.863 .000 -6.807 19.000 .000 -27.7000 4.0692 -36.2169 -19.1831 variances not assumed