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Asked by LucaDidavi
A survey of 180 motorists revealed that they were spending on...
A survey of 180 motorists revealed that they were spending on average $287 per year on car
maintenance, with a standard deviation of $94. Construct 95% and 99% confidence intervals.
How would you view the hypothesis that this spending was really about $300?
Solved by verified expert
Answered by chinnaistats
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