A trade magazine routinely checks the drive-through service times of fast-food restaurants. an 80% confidence interval that results from examining 552 customers in one fast-food chain's drive-through has a lower bound of 172.3 seconds and an upper bound of 175.5 seconds. what does this mean?
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Home » Business » A trade magazine routinely checks the drive-through service times of fast-food restaurants. an 80% confidence interval that results from examining 552 customers in one fast-food chain's drive-through has a lower bound of 172.