Mathematics, 29.07.2021 02:10, ijeomaokoro9488

An automobile manufacturer has given its car a 46.7 miles/gallon (MPG) rating. An independent testing firm has been contracted to test the actual MPG for this car since it is believed that the car has an incorrect manufacturer's MPG rating. After testing 150 cars, they found a mean MPG of 46.5. Assume the population standard deviation is known to be 1.1. A level of significance of 0.05 will be used. State the null and alternative hypotheses.

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An automobile manufacturer has given its car a 46.7 miles/gallon (MPG) rating. An independent testin...