Mathematics, 16.11.2019 04:31 andybiersack154
An automobile manufacturer has given its van a 27.627.6 miles/gallon (mpg) rating. an independent testing firm has been contracted to test the actual mpg for this van since it is believed that the van has an incorrect manufacturer's mpg rating. after testing 210210 vans, they found a mean mpg of 28.028.0. assume the population standard deviation is known to be 2.32.3. a level of significance of 0.050.05 will be used. state the null and alternative hypotheses.
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An automobile manufacturer has given its van a 27.627.6 miles/gallon (mpg) rating. an independent te...
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