Consider th e follow ing c o m p e tin g h y p o th eses and accom panying sam ple results.

Hypotheses: H0: μD ≤ 0; H A: μD > 2 Sam ple results:

a. Calculate t h e v a lu e o f t h e t e s t statistic. A s s u m e n o rm ality to approxim ate the p -value.

b. U se t h e 1 % s ig n ific a n c e level to make a conclusion. PG-69