A researcher wants to determine whether there is a difference between two sunscreen lotions. Participants in amarathon race on a hot, sunny day applied lotion A to one arm and lotion B to the other arm. The results areshown in the table. $\begin{array}{cr|cc}
& & \text { Lotion A } \
& & \text { No burn (Success) } & \text { Burn (Failure) } \
\hline & \text { No burn (Success) } & 720 & 41 \
\text { Lotion B }\
& \text { Burn (Failure) } & 51 & 74
\end{array}$
Is there a difference in the effectiveness of the two lotions in preventing sunburn? Use the critical-valuemethod and the α = 0.05 level of significance.

Question

A researcher wants to determine whether there is a difference between two sunscreen lotions. Participants in amarathon race on a hot, sunny day applied lotion A to one arm and lotion B to the other arm. The results areshown in the table. $\begin{array}{cr|cc} 
& & \text { Lotion A } \
& & \text { No burn (Success) } & \text { Burn (Failure) } \
\hline  & \text { No burn (Success) } & 720 & 41 \
 \text { Lotion B }\
& \text { Burn (Failure) } & 51 & 74
\end{array}$
 Is there a difference in the effectiveness of the two lotions in preventing sunburn? Use the critical-valuemethod and the α = 0.05 level of significance.

Quizplus · Accepted Answer

The Answer of A researcher wants to determine whether there is a difference between two sunscreen lotions. Participants in amarathon race on a hot, sunny day applied lotion A to one arm and lotion B to the other arm. The results areshown in the table. $\begin{array}{cr|cc} 
& & \text { Lotion A } \
& & \text { No burn (Success) } & \text { Burn (Failure) } \
\hline  & \text { No burn (Success) } & 720 & 41 \
 \text { Lotion B }\
& \text { Burn (Failure) } & 51 & 74
\end{array}$
 Is there a difference in the effectiveness of the two lotions in preventing sunburn? Use the critical-valuemethod and the α = 0.05 level of significance.

A Researcher Wants to Determine Whether There Is a Difference