A used car dealer says that the mean price of a 2018 Ford Explorer is...
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A used car dealer says that the mean price of a 2018 Ford Explorer is different from 18 800 You suspect this claim is incorrect and find that a random sample of 27 similar vehicles has a mean price of 18 700 and a standard deviation of 1 100 Is there enough evidence to reject the dealer s claim at a 5 significance level a Identify the null hypothesis and the alternative hypothesis The null hypothesis is Ho 18 700 Ho us 18 700 Ho 2 18 700 Ho uz 18 800 Ho us 18 800 Ho 18 800 The alternative hypothesis is Ha 18 800 Ha 18 800 Ha 18 700 Ha 18 700 Ha 18 700 Ha 18 800
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