Question

An automobile manufacturer has given its jeep a 49.5 miles/gallon (MPG) rating. An independent testing firm...

An automobile manufacturer has given its jeep a 49.5 miles/gallon (MPG) rating. An independent testing firm has been contracted to test the actual MPG for this jeep since it is believed that the jeep has an incorrect manufacturer's MPG rating. After testing 140 jeeps, they found a mean MPG of 49.6. Assume the population standard deviation is known to be 2.4. A level of significance of 0.1 will be used. Find the value of the test statistic. Round your answer to two decimal places.

0 0
Add a comment Improve this question Transcribed image text
Know the answer?
Add Answer to:
An automobile manufacturer has given its jeep a 49.5 miles/gallon (MPG) rating. An independent testing firm...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • An automobile manufacturer claims that its jeep has a 35.6 miles/gallon (MPG) rating. An independent testing...

    An automobile manufacturer claims that its jeep has a 35.6 miles/gallon (MPG) rating. An independent testing firm has been contracted to test the MPG for this jeep since it is believed that the jeep has an incorrect manufacturer's MPG rating. After testing 240 jeeps, they found a mean MPG of 35.2. Assume the variance is known to be 5.76. A level of significance of 0.05 will be used. Find the value of the test statistic. Round your answer to 2...

  • An automobile manufacturer claims that their jeep has a 31.3 miles/gallon (MPG) rating. An independent testing...

    An automobile manufacturer claims that their jeep has a 31.3 miles/gallon (MPG) rating. An independent testing firm has been contracted to test the MPG for this jeep. After testing 140 jeeps they found a mean MPG of 31.6. Assume the variance is known to be 1.69. Is there sufficient evidence at the 0.05 level that the jeeps outperform the manufacturer's MPG rating? Enter the hypotheses: Enter the value of the z test statistic. Round your answer to two decimal places....

  • An automobile manufacturer has given its jeep a 31.2miles/gallon (MPG) rating. An independent testing firm has...

    An automobile manufacturer has given its jeep a 31.2miles/gallon (MPG) rating. An independent testing firm has been contracted to test the actual MPG for this jeep since it is believed that the jeep has an incorrect manufacturer's MPG rating. After testing 230230 jeeps, they found a mean MPG of 31.4. Assume the population standard deviation is known to be 2.5. Is there sufficient evidence at the 0.05 level to support the testing firm's claim? Step 2 of 6: Find the...

  • An automobile manufacturer has given its van a 46.5 miles/gallon (MPG) rating. An independent testing firm...

    An automobile manufacturer has given its van a 46.5 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 has an incorrect manufacturer's MPG rating. After testing 160 vans, they found a mean MPG of 46.7. Assume the population standard deviation is known to be 1.9. A level of significance of 0.02 will be used. Find the value of the test statistic. Round your answer...

  • An automobile manufacturer claims that its van has a 38.438.4 miles/gallon (MPG) rating. An independent testing...

    An automobile manufacturer claims that its van has a 38.438.4 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 240240 vans, they found a mean MPG of 38.138.1. Assume the standard deviation is known to be 2.02.0. A level of significance of 0.050.05 will be used. Find the value of the test statistic. Round your answer to...

  • An automobile manufacturer claims that its van has a 44.2 miles/gallon (MPG) rating. An independent testing...

    An automobile manufacturer claims that its van has a 44.2 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 150 vans, they found a mean MPG of 44.4. Assume the standard deviation is known to be 1.5. A level of significance of 0.02 will be used. Find the value of the test statistic. Round your answer to...

  • An automobile manufacturer claims that its car has a 33.7 miles/gallon (MPG) rating. An independent testing...

    An automobile manufacturer claims that its car has a 33.7 miles/gallon (MPG) rating. An independent testing firm has been contracted to test the MPG for this car since it is believed that the car has an incorrect manufacturer's MPG rating. After testing 120 cars, they found a mean MPG of 34.0. Assume the variance is known to be 2.56. A level of significance of 0.02 will be used. Find the value of the test statistic. Round your answer to 2...

  • An automobile manufacturer claims that its van has a 55.955.9 miles/gallon (MPG) rating. An independent testing...

    An automobile manufacturer claims that its van has a 55.955.9 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 270270 vans, they found a mean MPG of 56.056.0. Assume the standard deviation is known to be 1.11.1. A level of significance of 0.010.01 will be used. State the hypotheses. Enter the hypotheses:

  • An automobile manufacturer claims that its van has a 49.3 miles/gallon (MPG) rating. An independent testing...

    An automobile manufacturer claims that its van has a 49.3 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 250 vans, they found a mean MPG of 49.1. Assume the standard deviation is known to be 1.2. A level of significance of 0.02 will be used. State the hypotheses. Enter the hypotheses: Answer Tables Keypad

  • An automobile manufacturer has given its van a 54.6 miles/gallon (MPG) rating. An independent testing firm...

    An automobile manufacturer has given its van a 54.6 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 180 vans, they found a mean MPG of 54.8. Assume the population variance is known to be 4.41. Is there sufficient evidence at the 0.1 level to support the testing firm's claim? Find the value of the test...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT