Fifteen experimental batteries were selected at random

Chapter 15, Problem 25E

(choose chapter or problem)

Fifteen experimental batteries were selected at random from a lot at pilot plant A, and 15

standard batteries were selected at random from production at plant B. All 30 batteries were

simultaneously placed under an electrical load of the same magnitude. The first battery to fail

was an A, the second a B, the third a B, and so on. The following sequence shows the order of

failure for the 30 batteries:

                                       

                                   A   B   B   B   A   B   A   A   B   B   B   B   A   B   A

                                   B   B   B   B   A   A   B   A   A   A   B   A   A   A   A

Using the large-sample theory for the U test, determine whether there is sufficient evidence to

permit the experimenter to conclude that the lengths of life for the experimental batteries tend

to be greater than the lengths of life for the standard batteries. Use \(\alpha=.05\).

Equation transcription:

Text transcription:

alpha=.05