A Company That Produces Financial Accounting Software Wants to Offer

Multiple Choice

A company that produces financial accounting software wants to offer better training to its customers. The training is intended to decrease the amount of time required to do complicated accounting calculations. For seven individuals, the amount of time (in minutes) to complete a complicated calculation is determined before and after completing the new training. Using the critical value approach and α = 0.05, the appropriate conclusion is ________.

A) reject the null hypothesis; we cannot conclude the median difference of the times is greater than zero
B) reject the null hypothesis; we can conclude the median difference of the times is greater than zero
C) do not reject the null hypothesis; we cannot conclude the median difference of the times is greater than zero
D) do not reject the null hypothesis; we can conclude the median difference of the times is greater than zero