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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.
Errors per VoucherNumber of Vouchers
0-under 2500
2-under 4400
4-under 6300
6-under 8200
8-under 10100

The midpoint of the first class interval is _________.
a) 500
b) 2
c) 1.5
d) 1
e) 250

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