THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

Multiple Choice

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
An auditor is faced with reviewing 1,098 invoices.From a random sample of 134 of these accounts,he found that the average amount was $548 with a standard deviation of $129.He also found that 42 out of the 134 in the sample were from out-of-state suppliers.
-Find a 95% confidence interval for the proportion of all invoices that are from out-of-state suppliers.

A) 0.313 ± 0.0739
B) 0.313 ± 0.1298
C) 0.313 ± 0.0426
D) 0.313 ± 0.1519