A local supermarket claims that the variance of waiting time for its customers to be served is the lowest in the area. A competitor supermarket checks the waiting time at both supermarkets. The sample statistics are listed below. Test the local bank's hypothesis. Use $\alpha = 0.05$.
Local Supermarket Competitor Supermarket
$$\begin{array} { l l }
\mathrm { n } _ { 1 } = 13 & \mathrm { n } 2 = 16 \
\mathrm {~s} _ { 1 } = 0.99 \text { minutes } & \mathrm { s } _ { 2 } = 1.17 \text { minutes }
\end{array}$$ Assume the samples were randomly selected from normal populations.

Question

A local supermarket claims that the variance of waiting time for its customers to be served is the lowest in the area. A competitor supermarket checks the waiting time at both supermarkets. The sample statistics are listed below. Test the local bank's hypothesis. Use $\alpha = 0.05$.
Local Supermarket Competitor Supermarket
$$\begin{array} { l l } 
\mathrm { n } _ { 1 } = 13 & \mathrm { n } 2 = 16 \
\mathrm {~s} _ { 1 } = 0.99 \text { minutes } & \mathrm { s } _ { 2 } = 1.17 \text { minutes }
\end{array}$$ Assume the samples were randomly selected from normal populations.

Quizplus · Accepted Answer

The Answer of A local supermarket claims that the variance of waiting time for its customers to be served is the lowest in the area. A competitor supermarket checks the waiting time at both supermarkets. The sample statistics are listed below. Test the local bank's hypothesis. Use $\alpha = 0.05$.
Local Supermarket Competitor Supermarket
$$\begin{array} { l l } 
\mathrm { n } _ { 1 } = 13 & \mathrm { n } 2 = 16 \
\mathrm {~s} _ { 1 } = 0.99 \text { minutes } & \mathrm { s } _ { 2 } = 1.17 \text { minutes }
\end{array}$$ Assume the samples were randomly selected from normal populations.

A Local Supermarket Claims That the Variance of Waiting Time α=0.05\alpha = 0.05α=0.05

A Local Supermarket Claims That the Variance of Waiting Time $\alpha = 0.05$