An auditor reviewed 22 oral surgery insurance claims from a particular surgical office, determining that the mean out-of-pocket patient billing above the reimbursed amount was $270.89 with a standard deviation of $76.48. 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: μ ≤ $250 versus H1: μ > $250. Choose the right option.Reject H0 if tcalc < 1.721Reject H0 if tcalc > 1.721 multiple choice 1ab Correct (a-2) Calculate the test statistic. (Round your answer to 2 decimal places.) Test statistic (a-3) The null hypothesis should be rejected. multiple choice 2False CorrectTrue (a-4) The evidence does not show that the average out-of-pocket expense is greater than $250. multiple choice 3True CorrectFalse (b) Is this a close decision? multiple choice 4No CorrectYes

Name: An auditor reviewed 22 oral surgery insurance claims from a particular
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Description: An auditor reviewed 22 oral surgery insurance claims from a particular surgical office, determining that the mean out-of-pocket patient billing above the reimbursed amount was $270.89 with a standard deviation of $76.48. At the 5 percent level of sig

xbar = 270.89 s = 76.48 n = 22 u = 250

Answered: An auditor reviewed 22 oral surgery…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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Problem 1P

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An auditor reviewed 22 oral surgery insurance claims from a particular surgical office, determining that the mean out-of-pocket patient billing above the reimbursed amount was $270.89 with a standard deviation of $76.48.

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: μ ≤ $250 versus H₁: μ > $250. Choose the right option.

Reject H₀ if t_calc < 1.721
Reject H₀ if t_calc > 1.721

multiple choice 1

a
b Correct

(a-2) Calculate the test statistic. (Round your answer to 2 decimal places.)

Test statistic

(a-3) The null hypothesis should be rejected.

multiple choice 2

False Correct
True

(a-4) The evidence does not show that the average out-of-pocket expense is greater than $250.

multiple choice 3

True Correct
False

(b) Is this a close decision?

multiple choice 4

No Correct
Yes

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