Asked • 11/13/22

Testing One-Sample Proportion Hypothesis (Word Problem)

A tyre manufacturer claims that more than 85% of the company’s tyres will last at least 80,000km. In a random sample of 400 tyres, 22 wore out before reaching 80,000km. Do the data support the manufacturer’s claim with a=0.01

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Gabrielle M. answered • 11/13/22

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