1 A used car dealer says that the mean price of used cars sold in...
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1 A used car dealer says that the mean price of used cars sold in the last 12 months is at least 21 000 You suspect this claim is incorrect and find that a random sample of 14 used cars sold in the last 12 months has a mean price of 19 189 and a standard deviation of 2 950 Is there enough evidence to reject the dealer s claim at a 0 05 Assume the population is normally distributed State in words the null and alternative hypotheses Null Alternative
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