An automobile manufacturer claims that its van has a 28.8 miles/gallon (MPG) rating. An independent testing firm has been contracted to test the MPG for this van since it is believed that the van has an incorrect manufacturer's MPG rating. After testing 300 vans, they found a mean MPG of 28.9. Assume the variance is known to be 2.25. A level of significance of 0.05 will be used. Make a decision to reject or fail to reject the null hypothesis.
An automobile manufacturer claims that its van has a 28.8 miles/gallon (MPG) rating. An independent testing firm has been contracted to test the MPG for this van since it is believed that the van has an incorrect manufacturer's MPG rating. After testing 300 vans, they found a mean MPG of 28.9. Assume the variance is known to be 2.25. A level of significance of 0.05 will be used. Make a decision to reject or fail to reject the null hypothesis.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 11PPS
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An automobile manufacturer claims that its van has a 28.8 miles/gallon (MPG) rating. An independent testing firm has been contracted to test the MPG for this van since it is believed that the van has an incorrect manufacturer's MPG rating. After testing 300 vans, they found a
Make a decision to reject or fail to reject the null hypothesis.
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