A Quality Control Supervisor Wishes to Determine Whether the Following

Multiple Choice

A quality control supervisor wishes to determine whether the following measurements are random: For this purpose,the supervisor computes the median of the thirty observations above and compares each measurement to the median to perform a runs test.She determines the number of runs and finds that the corresponding z score is ______.

A) 1.506
B) −1.506
C) 1.706
D) −1.706
E) −1.676