Individual Experience	Experience of Others	Combination
24.5	20.6	21.0
16.1	18.2	20.5
20.2	19.4	24.9
18.6	16.5	20.8
19.7	22.6	22.2
20.8	20.1	20.7
18.1	18.0	20.7
19.2	20.4	20.8
18.5	20.7	23.2
18.0	20.0	23.8
17.0	21.1	21.5
22.5	18.5	22.8
23.0	18.4	21.7
18.9	20.6	24.7
21.1	19.7	18.4
22.1	21.8	17.6
22.4	21.0	22.0
17.8	20.3	23.1
21.7		21.6

Auditors make assessments on the basis of their individual experience, the experience of others, or a combination of experiences. A study of the auditors' methods was performed. The average number of errors is recorded. At a=0.10, test the claim that errors are equal.