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27 April, 21:39

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?

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  1. 28 April, 00:00
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    -A person can be 95% confident that the mean drive through service time lies between 177.6 seconds and 181.0 seconds.

    Step-by-step 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.
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