In a test of a new surgical procedure, the five most respected surgeons in FlatBroke Township were invited to Carver Hospital. Each surgeon was assigned two patients of the same age, gender, and overall health. One patient was operated upon in the old way, and the other in the new way. Both procedures are considered equally safe. The surgery times are shown below: $ \quad $$ \quad $$ \quad $$ \quad $$ \quad $$ \quad $$ \quad $$ \quad $$ \quad $$ \quad $$\text { Surgeon }$
$\begin{array} { |c | c | c | c | c | c | }
\hline { \text { Allen } } & { \text { Bob } } & { \text { Chloe } } & \text { Daphne } & { \text { Edgar } } \
\hline \text { Old way } & 36 & 55 & 28 & 40 & 62 \
\hline \text { New way } & 31 & 45 & 28 & 35 & 57 \
\hline
\end{array}$ The time (in minutes) to complete each procedure was carefully recorded. In a right-tailed test for a difference of means, the test statistic is:
A)3.162
B)1.645
C)1.860
D)2.132

Question

In a test of a new surgical procedure, the five most respected surgeons in FlatBroke Township were invited to Carver Hospital. Each surgeon was assigned two patients of the same age, gender, and overall health. One patient was operated upon in the old way, and the other in the new way. Both procedures are considered equally safe. The surgery times are shown below: $ \quad $$ \quad $$ \quad $$ \quad $$ \quad $$ \quad $$ \quad $$ \quad $$ \quad $$ \quad $$\text { Surgeon }$
$\begin{array} { |c | c | c | c | c | c | } 
\hline { \text { Allen } } & { \text { Bob } } & { \text { Chloe } } & \text { Daphne } &  { \text { Edgar } } \
\hline  \text { Old way } & 36 & 55 & 28 & 40 & 62 \
\hline \text { New way } & 31 & 45 & 28 & 35 & 57 \
\hline
\end{array}$ The time (in minutes) to complete each procedure was carefully recorded. In a right-tailed test for a difference of means, the test statistic is:
A)3.162
B)1.645
C)1.860
D)2.132

Quizplus · Accepted Answer

The test statistic of 3.162 suggests that the new surgical procedure significantly reduces the surgery time compared to the old way, as indicated by the differences in surgery times for each surgeon. This value likely represents a calculated t-score or z-score indicating a statistically significant difference in means between the two procedures.

In a Test of a New Surgical Procedure, the Five \quad

In a Test of a New Surgical Procedure, the Five $\quad$