Mathematics, 05.05.2020 06:19 alex5560
An automobile manufacturer has given its car a 52.6 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 250 cars, they found a mean MPG of 52.8. Assume the population standard deviation is known to be 1.6. A level of significance of 0.05 will be used. State the null and alternative hypotheses.
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Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42
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An automobile manufacturer has given its car a 52.6 miles/gallon (MPG) rating. An independent testin...
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