State what the given confidence interval suggests about the two population means.
-A researcher was interested in comparing the response times of two different cab companies. Companies A and
B were each called at 50 randomly selected times. The calls to company A were made independently of the calls
to company B. The response times were recorded and the summary statistics were as follows: $$\begin{array} { l c c }
& \text { Company A } & \text { Company B } \
\hline \text { Mean response time } & 7.6 \text { mins } & 6.9 \text { mins } \
\text { Standard deviation } & 1.4 \text { mins } & 1.7 \text { mins }
\end{array}$$ Use a 0.02 significance level to test the claim that the mean response time for company A differs from the mean
response time for company B. Use the P-value method of hypothesis testing.

Question

State what the given confidence interval suggests about the two population means.
-A researcher was interested in comparing the response times of two different cab companies. Companies A and
B were each called at 50 randomly selected times. The calls to company A were made independently of the calls
to company B. The response times were recorded and the summary statistics were as follows: $$\begin{array} { l c c } 
& \text { Company A } & \text { Company B } \
\hline \text { Mean response time } & 7.6 \text { mins } & 6.9 \text { mins } \
\text { Standard deviation } & 1.4 \text { mins } & 1.7 \text { mins }
\end{array}$$ Use a 0.02 significance level to test the claim that the mean response time for company A differs from the mean
response time for company B. Use the P-value method of hypothesis testing.

Quizplus · Accepted Answer

The Answer of State what the given confidence interval suggests about the two population means.
-A researcher was interested in comparing the response times of two different cab companies. Companies A and
B were each called at 50 randomly selected times. The calls to company A were made independently of the calls
to company B. The response times were recorded and the summary statistics were as follows: $$\begin{array} { l c c } 
& \text { Company A } & \text { Company B } \
\hline \text { Mean response time } & 7.6 \text { mins } & 6.9 \text { mins } \
\text { Standard deviation } & 1.4 \text { mins } & 1.7 \text { mins }
\end{array}$$ Use a 0.02 significance level to test the claim that the mean response time for company A differs from the mean
response time for company B. Use the P-value method of hypothesis testing.

State What the Given Confidence Interval Suggests About the Two