A company claims that its heaters last more than 5 yearsFebruary 27, 2020
A state Department of Transportation claims that the meanFebruary 27, 2020
A used car dealer says that the mean price of a three-year-old sport utility
vehicle in good condition is $18,000. A random sample of 20 such vehicles has a mean price of $18,450 and a standard deviation of $1930. At α=0.08, can the dealer’s claim be supported?
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