astrozerx astrozerx

10-07-2021
Mathematics

contestada

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

Respuesta :

kehindearowojobe kehindearowojobe

10-07-2021

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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