15. A Type II error is rejecting a true null hypothesis. true/false 11. The inte
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Question
15. A Type II error is rejecting a true null hypothesis. true/false
11. The internal auditing staff of a local manufacturing company performs a sample audit each quarter to estimate the proportion of accounts that are delinquent (more than 90 days overdue). For this quarter, the auditing staff randomly selected 400 customer accounts and found that 80 of these accounts were delinquent. What is the 99% confidence interval for the proportion of all delinquent customer accounts at this manufacturing company?
A. .1608 to .2392
B. .1992 to .2008
C. .1671 to .2329
D. .1485 to .2515
E. .1714 to .2286
14. For a given hypothesis test, if we do not reject H0 and H0 is false.
A. No error has been committed
B. Type I error has been committed
C. Type II error has been committed
D. Type III error has been committed
23. A simple bivariate regression analysis with 21 observations would yield ________ degrees of freedom error and _________ degrees of freedom total.
A. 1, 20
B. 18, 19
C. 19, 20
D. 1, 19
E. 18, 20
Explanation / Answer
15. False; A type II error is associated with not rejecting the null hypothesis when it is false.
11. Option D is correct.
14. Option C is correct.
23. Option C is correct.
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