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Problem

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11 Nov 2021

Given information

Given: Suppose that the insurance companies did do a survey. They randomly surveyed 400 drivers and found that 320 claimed they always buckle up. We are interested in the population proportion of drivers who claim they always buckle up.

Step-by-step explanation

Step 1.

Distribution needed for this problem is normal distribution,

                               

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Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208

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