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need done asap An automobile manufacturer claims that their van has a 59.5 miles/gallon (MPG) rating. An independent testing firm has been contracted to test
need done asap 
An automobile manufacturer claims that their van has a 59.5 miles/gallon (MPG) rating. An independent testing firm has been contracted to test the MPG for this van. After testing 250 vans they found a mean MPG of 59.2. Assume the standard deviation is known to be 1.9. Is there sufficient evidence at the 0.1 level that the vans have an incorrect manufacturer's MPG rating? What is the conclusion for this test? Reject the null hypothesis No answer text provided. Fail to reject the null hypothesis No conclusion can be reached Question 29 Step by Step Solution
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Introductory Statistics For The Behavioural Sciences
Authors: Joan Welkowitz, Robert B. Ewen, Jacob Cohen
2nd Edition
0127432604, 9780127432601
