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The mean difference from question 3 was -2.5. 2.5 - 2 (0.95 ) - $ 4.4 A simple linear regression was performed to relate average

The mean difference from question 3 was -2.5.

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2.5 - 2 (0.95 ) - $ 4.4 A simple linear regression was performed to relate average ED waiting times to subject's sex, with x1 coded as 1 for male and 0 for female. The regression results are as follows: slope y =57.4+-2.5x1 , and the estimated standard error of the slope for sex is 0.95. The R2 for this regression is

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