A Trading Magazine Wants to Determine the Number of Hours

Multiple Choice

A trading magazine wants to determine the number of hours stockbrokers work each week.In particular,the trading magazine wants to determine if the median number of hours worked per week differs from 100 hours.The magazine samples 18 traders.For the Wilcoxon signed-rank test,the value of the test statistic is T = T⁺ = 153.Using the critical value approach and α = 0.01,the appropriate conclusion is _________________________________________________________________________________.

A) to reject the null hypothesis;we cannot conclude the median number of hours worked per week differs from 100
B) do not reject the null hypothesis;conclude the median number of hours worked per week differs from 100
C) do not reject the null hypothesis;we cannot conclude the median number of hours worked per week differs from 100
D) reject the null hypothesis;conclude the median number of hours worked per week differs from 100