An Electrical Engineer Wants to Compare the Resistance of Four

Multiple Choice

An electrical engineer wants to compare the resistance of four types of wire made from different materials.Five wires of equal lengths and cross sectional areas are prepared for each of the four wire types.Each section of wire is randomly tested by sending a current through the wire and measuring the resistance.Calculate
,
And the F-ratio.Can you reject
Using α = 0.05? The ANOVA table is listed below.

A)

= 97.915;

=91.008;F-Ratio = 1.076;No,do not reject

Using α = 0.05.
B)

= 97.915;

=85.655;F-Ratio = 1.143;No,do not reject

Using α = 0.05.
C)

= 97.915;

=76.638;F-Ratio = 1.278;Yes,reject

Using α = 0.05.
D)

=73.436;

=76.638;F-Ratio = 0.958;No,do not reject

Using α = 0.05.
E)

=73.436;

=72.807;F-Ratio = 1.009;No,do not reject

Using α = 0.05.