Question

A trade magazine routinely checks the​ drive-through service times of​ fast-food restaurants. Upper A 95​% confidence interval that results from examining 745 customers in one​ fast-food chain's​ drive-through has a lower bound of 177.6 seconds and an upper bound of 181.0 seconds. What does this​ mean?

Answer 1

-A person can be 95% confident that the mean drive through service time lies between 177.6 seconds and 181.0 seconds.

Explanation:

- Confidence level is the degree of certainty we have on a particular statistic.

-The 95% confidence interval means that we are 95% confident that the mean drive through service time is lies between 177.6 seconds and 181.0 minutes.