Sample 1 Sample 2 17.7 24.2 16.2 23.7 18.4 21.2 16.1 24.3 16.9 22.4 11.6 20.7 12.6 22.8 12.8 22.1 12.7 16.6 Pull-strength tests on 10 soldered leads for a semiconductor device yield the results provided in the accompanying data set (Sample 1), in pounds of force required to rupture the bond. Another set of 8 leads was tested after encapsulation to determine whether the pull strength had been increased by encapsulation of the device, with the results also provided in the accompanying data set (Sample 2). Comment on the evidence available concerning equality of the two population variances. Click here to view the data set. Click here to view page 1 of the table of critical values of the f-distribution, for alpha =0.01. Click here to view page 2 of the table of critical values of the f-distribution, for alpha =0.01. Click here to view page 1 of the table of critical values of the f-distribution, for alpha =0.05. Click here to view page 2 of the table of critical values of the f-distribution, for alpha =0.05. The computed f-value with v1=9 and v2=7 degrees of freedom is f= Since P(F>f) is the variances be equal..

1. Sample 1 Sample 2
17.7 24.2
16.2 23.7
18.4 21.2
16.1 24.3
16.9 22.4
11.6 20.7
12.6 22.8
12.8 22.1
12.7
16.6 Pull-strength tests on 10 soldered leads for a semiconductor device yield the results
provided in the accompanying data set (Sample 1), in pounds of force required to rupture the
bond. Another set of 8 leads was tested after encapsulation to determine whether the pull strength
had been increased by encapsulation of the device, with the results also provided in the
accompanying data set (Sample 2). Comment on the evidence available concerning equality of
the two population variances. Click here to view the data set. Click here to view page 1 of the
table of critical values of the f-distribution, for alpha =0.01. Click here to view page 2 of the
table of critical values of the f-distribution, for alpha =0.01. Click here to view page 1 of the
table of critical values of the f-distribution, for alpha =0.05. Click here to view page 2 of the
table of critical values of the f-distribution, for alpha =0.05. The computed f-value with v1=9 and
v2=7 degrees of freedom is f= Since P(F>f) is the variances be equal.