Question: answer attached question A consumer group claims that the mean minimum time it takes for a sedan to travel a quarter mile is greater than

answer attached question

A consumer group claims that the mean minimum time it takes for a sedan to travel a quarter mile is greater than 14.5 seconds. A random sample of 21 sedans has a mean minimum time to travel a quarter mile of 15.4 seconds and a standard deviation of 2.09 seconds. At

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