(a-2) Calculate the Test statistic. (Round your answer to 3 decimal places.) Tes
ID: 3431779 • Letter: #
Question
(a-2) Calculate the Test statistic. (Round your answer to 3 decimal places.) Test statistic At the 5 percent level of significance, does this sample prove a violation of the guideline that the average patient should pay no more than $250 out-of-pocket? (a-1) H0: p $250. Choose the right option. Reject H0 if t calc 1.729 An auditor reviewed 20 oral surgery insurance claims from a particular surgical office, determining that the mean out-of-pocket patient billing above the reimbursed amount was $278.60 with a standard deviation of $78.98.Explanation / Answer
(a-1) Reject Ho if t>1.729
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(a-2)
t=(xbar-mu)/(s/vn)
=(278.6-250)/(78.98/sqrt(20))
=1.619
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