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An automobile manufacturer has given its van a 31.0 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 performs over the manufacturer's MPG rating. After testing 150 vans, they found a mean MPG of 31.2. Assume the population standard deviation is known to be 2.1. Is there sufficient evidence at the 0.02 level to support the testing firm's claim? Step 1 of 6: State the null and alternative hypotheses.

An automobile manufacturer has given its van a 31.0 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 performs over the manufacturer's MPG rating. After testing 150 vans, they found a mean MPG of 31.2. Assume the population standard deviation is known to be 2.1. Is there sufficient evidence at the 0.02 level to support the testing firm's claim? Step 1 of 6: State the null and alternative hypotheses.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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An automobile manufacturer has given its van a 31.0 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 performs over the manufacturer's MPG rating. After testing 150 vans, they found a mean MPG of 31.2. Assume the population standard deviation is known to be 2.1. Is there sufficient evidence at the 0.02 level to support the testing firm's claim? Step 1 of 6: State the null and alternative hypotheses.
Transcribed Image Text:An automobile manufacturer has given its van a 31.0 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 performs over the manufacturer's MPG rating. After testing 150 vans, they found a mean MPG of 31.2. Assume the population standard deviation is known to be 2.1. Is there sufficient evidence at the 0.02 level to support the testing firm's claim? Step 1 of 6: State the null and alternative hypotheses.
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