(a) In the manufacturing of a certain scientific instrument great importance is attached to the life of a particular critical component. This component is obtained in bulk from two sources, A and B,...

(a) In the manufacturing of a certain scientific instrument great importance is attached to the life of a particular critical component. This component is obtained in bulk from two sources, A and B, and in the course of inspection, the lives of 100 of the components from each source are determined. The following tables are obtained: - [3]
Source A
Source B

Log x
No of components
Log x
No of Components

1.7202
1.6990
1.6767
1.6532
1.6284
1.6021
1.5740
1
12
23
20
19
16
9
1.5682
1.6232
1.6721
1.7160
1.7559
1.7924
1.8261
13
15
17
28
12
10
05

Which source is more consistent?