A Local Retail Business Wishes to Determine If There Is

Multiple Choice

A local retail business wishes to determine if there is a difference in preferred indoor temperature between men and women. A random sample of data is collected, with the following results (note: there are slight differences between Excel and MegaStat output in this test) : Using a 0.05 level of significance, can we conclude that there is indeed a difference in the temperature that men prefer compared to women? What is the null hypothesis if we assume men to be group 1 and women group 2?

A) µ1 = µ2, or µd = 0
B) µ1 ≠ µ2, or µd ≠ 0
C) µ1 - µ2 ≤ 20
D) µ1 - µ2 > 20
E) None of these statements are correct