Hélène is responsible for a group of travelers who are boast of covering an average of 250 km per day, during a 70 day trip. To verify this assertion, Hélène takes a sample of 20 daily journeys without replacement and finds an average journey of 224 km with a standard deviation 21 km sample. Assuming that the route of travelers is a variable which obeys a normal law, we can say, at the level of significance α = 0.1, that travelers exaggerate in their assertion?

Hélène is responsible for a group of travelers who are boast of covering an average of 250 km per day, during a 70 day trip. To verify this assertion, Hélène takes a sample of 20 daily journeys without replacement and finds an average journey of 224 km with a standard deviation 21 km sample. Assuming that the route of travelers is a variable which obeys a normal law, we can say, at the level of significance α = 0.1, that travelers exaggerate in their assertion?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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