A health professional obtains records for 33 patients who have undergone a certain surgical procedure and finds the average length of stay is 3.23 days with a standard deviation of 1.58 days. Using a = 0.10, is there evidence to suggest the actual average length of stay for this surgical procedure is 3 days? What are the hypotheses? Ho: µ = 3.23 vs H1:µ # 3.23 Ho:u = 3 vs H1: µ # 3 Họ:ē = 3 vs H1 : ē + 3 O Ho: = 3.23 vs H1: 3.23 Calculate the test statistic using the correct letter. t = - 0.84 t = 0.84 z = 0.84 Oz= -0.84 Determine the critical values. ±1.691 Q+1.694 O+1.307 1.692 O+1.282 O+1.309 O+1.645

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