Mathematics, 03.05.2021 15:10 keilahkimbrough8
An automobile manufacturer has given its van a 59.5 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 250 vans, they found a mean MPG of 59.2. Assume the population standard deviation is known to be 1.9. Is there sufficient evidence at the 0.1 level to support the testing firm's claim?
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An automobile manufacturer has given its van a 59.5 miles/gallon (MPG) rating. An independent testin...
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