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Researchers at the Mayo Clinic have studied the effect of sound levels on patient healing and have found a significant association (louder hospital ambient

Researchers at the Mayo Clinic have studied the effect of sound levels on patient healing and have found a significant association (louder hospital ambient sound level is associated with slower postsurgical healing). Based on the Mayo Clinic's experience, Ardmore Hospital installed a new vinyl flooring that is supposed to reduce the mean sound level (decibels) in the hospital corridors. The sound level is measured at five randomly selected times in the main corridor. New Flooring 37 38 45 39 old Flooring 53 45 48 50 44 49 (a-3) Calculate the test statistic. (Round your answer to 4 decimal places. Input the answer as a positive value.) Test statistic (b-3) What is the test statistic? (Round the test statistic value to 4 decimal places.) Test statistic

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a3 406 s1 2588 n1 5 49 s2 1517 n2 5 a3 The pooled variances p 2 n1 1s12 n2 1s22n1 n2 2 4 25882 ... blur-text-image

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