Find a 95% confidence interval for the variance of a normal population from the sample: Carbon monoxide
Question:
Find a 95% confidence interval for the variance of a normal population from the sample:
Carbon monoxide emission (grams per mile) of a certain type of passenger car (cruising at 55 mph): 17.3, 17.8, 18.0, 17.7, 18.2, 17.4, 17.6, 18.1
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