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Mandarinka [93]
2 years ago
15

A trade magazine routinely checks the​ drive-through service times of​ fast-food restaurants. 95​% confidence interval that resu

lts from examining 609 customers in one​ fast-food chain's​ drive-through has a lower bound of 160.8 seconds and an upper bound of 160.8 seconds. What does this​ mean?
Mathematics
1 answer:
Anastaziya [24]2 years ago
8 0

Answer:

z= 1.70 Since the test statistic is less than the critical​ value, we can conclude that the average length of an online video is not more than 8 minutes

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