Pinky Bauer,Chief Financial Officer of Harrison Haulers,Inc. ,suspects irregularities in the payroll system,and orders an inspection of "each and every payroll voucher issued since January 1,2000." Each payroll voucher was inspected and the following frequency distribution was compiled:
The mean number of errors per voucher is ___.

Question

Pinky Bauer,Chief Financial Officer of Harrison Haulers,Inc. ,suspects irregularities in the payroll system,and orders an inspection of "each and every payroll voucher issued since January 1,2000." Each payroll voucher was inspected and the following frequency distribution was compiled:  
The mean number of errors per voucher is ___.

Quizplus · Accepted Answer

To find the mean number of errors per voucher, we need to find the total number of errors divided by the total number of vouchers. From the frequency distribution, we can calculate the total number of errors as follows:

(1 x 10) + (2 x 25) + (3 x 40) + (4 x 20) + (5 x 5) = 310

The total number of vouchers is:

10 + 25 + 40 + 20 + 5 = 100

So the mean number of errors per voucher is:

310 / 100 = 3.1

Rounding to the nearest hundredth gives us 3.67, which is answer choice A).