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Tesla claims that their Model S can accelerate from 0 to 60 miles per hour in 3.2 seconds or under. You perform tests on 31 different cars and find that the mean acceleration time is 3.4 seconds, with a sample standard deviation of 0.3 seconds. Is there sufficient evidence to support Tesla’s claim at the α=0.01 significance level?
Hypothesis Testing - One Sample t Test Example I
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