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: $$\begin{array}{l}\begin{array} { r r r r r r r r } 68.2 & 65 & 66.5 & 65 & 67.5 & 68 & 66 & 64.5 \\65.3 & 64.2 & 67.6 & 66.5 & 66.8 & 68.9 & 67 & 65 \\\hline\\\end{array}\\\begin{array} { r r r r r r r | } \hline 65 & 67 & 68 & 71 & 68.5 & 63.6 & 64.7 \\71.5 & 70.7 & 66 & 68.5 & 70.5 & 69.5 & 70.1 \\\hline\end{array}\end{array}$$ For this purpose, the supervisor uses a previous median of 67.9 and compares each measurement to the median to perform a runs test.She uses a significance level of 0.05.The appropriate decision is ______.

A) reject the null hypothesis and conclude that the observations are random
B) reject the null hypothesis and conclude that the observations are not random
C) do not reject the null hypothesis and conclude that the observations are random
D) do not reject the null hypothesis and conclude that the observations are not random
E) do nothing