An instructor told Irma's class she would drop the lowest test score as measured by z scores. Irma's scores, means, and standard deviations are given below. Which of the four tests should be dropped? $$\begin{array} { l c c c }
& \underline{ \text { Irma's Score }} & \underline{ \text { Mean }} & \underline{ \text { Standard Deviation }} \
\text { Test } 1 & 74 & 77 & 6 \
\text { Test 2 } & 81 & 91 & 5 \
\text { Test 3 } & 68 & 70 & 6 \
\text { Test 4 } & 90 & 93 & 2
\end{array}$$

Question

An instructor told Irma's class she would drop the lowest test score as measured by z scores. Irma's scores, means, and standard deviations are given below. Which of the four tests should be dropped? $$\begin{array} { l c c c } 
& \underline{ \text { Irma's Score }} & \underline{ \text { Mean }} & \underline{ \text { Standard Deviation }} \
 \text { Test } 1 & 74 & 77 & 6 \
\text { Test 2 } & 81 & 91 & 5 \
\text { Test 3 } & 68 & 70 & 6 \
\text { Test 4 } & 90 & 93 & 2
\end{array}$$

Quizplus · Accepted Answer

The Answer of An instructor told Irma's class she would drop the lowest test score as measured by z scores. Irma's scores, means, and standard deviations are given below. Which of the four tests should be dropped? $$\begin{array} { l c c c } 
& \underline{ \text { Irma's Score }} & \underline{ \text { Mean }} & \underline{ \text { Standard Deviation }} \
 \text { Test } 1 & 74 & 77 & 6 \
\text { Test 2 } & 81 & 91 & 5 \
\text { Test 3 } & 68 & 70 & 6 \
\text { Test 4 } & 90 & 93 & 2
\end{array}$$

An Instructor Told Irma's Class She Would Drop the Lowest