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: Test the claim that a sample is from a population with a mean that is less than the speed limit of 65 mph. Use
: Test the claim that a sample is from a population with a
mean that is less than the speed limit of 65 mph. Use a 0.05 significance level. The
standard deviation of the sample is 4.0751, the mean of the sample is 60.6667 and
n=12.
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