Rachel Robertson wishes to use mean-per-unit sampling to evaluate the reasonable
ID: 2520224 • Letter: R
Question
Rachel Robertson wishes to use mean-per-unit sampling to evaluate the reasonableness of the book value of the accounts receivable of Smith, Inc. Smith has 10,000 receivable accounts with a total book value of $1,500,000. Robertson estimates the population’s standard devia- tion to be equal to $25. After examining the overall audit plan, the auditors believe that the account’s tolerable misstatement is $60,000, and that a risk of incorrect rejection of 5 percent and a risk of incorrect acceptance of 10 percent are appropriate.
a. Calculate the required sample size.
b. Assuming the following results:
Book value of items in sample = $149
Average audited value of items in sample = $146
Standard deviation of sample = $28
Use the mean-per-unit method to:
(1) Calculate the point estimate of the account’s audited value.
(2) Calculate the projected misstatement for the population.
(3) Calculate the adjusted allowance for sampling risk.
(4) State the auditors’ conclusion in this situation (accept or reject).
Use the following replies for the above questions—replies may be used once, more than once, or not at all. In all cases, select the reply closest to your answer.
Replies Sample Size (a) 1. 14 accounts 2. 112 accounts 3. 183 accounts 4. 263 accounts 10. $40,000 11. $1,360,423 12. $1,460,000 13. $1,469,799 14. $1,470,000 15. $1,530,000 16. $1,530,201 17. Accept population-conclude the risk that it Other Replies for (b) 5. $549 6. $30,000 7. $30,201 8. $33,506 9. $34,602 is materially misstated is appropriately low Reject population-conclude the risk that it is materially misstated is too high. 18.Explanation / Answer
Ans:
A) The required of sample size = 182.25 ? 183 account
B)
?1. ?The point estimate of the accounts audited values. = $1,460,000
2. The projected misstatement for the population = $40,000
3. The adjusted allowance for sampling risk = 33,451.86
4. The the auditors’ conclusion in this situation = 1,426,548.14 –1,493,451.86
BV of 1,500,000 is outside of interval and therefore materially misstated.
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