Question

A researcher wants to conduct a hypothesis test to determine if the mean miles per gallon of a certain car is above 25 miles
0 0
Add a comment Improve this question Transcribed image text
Answer #1

Solution:
Given that,  
H0 : μ<=25 and H1:μ>25
Z= 1.74
The p value can be calculated as,
P value = P(Z>1.75)
=1-P(Z<=1.75)
=1-0.9591
=0.0409

Add a comment
Know the answer?
Add Answer to:
A researcher wants to conduct a hypothesis test to determine if the mean miles per gallon...
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
  • It is necessary for an automobile producer to estimate the number of miles per gallon (mpg)...

    It is necessary for an automobile producer to estimate the number of miles per gallon (mpg) achieved by its cars. Suppose that the sample mean for a random sample of 40 cars is 28.8 mpg and assume the standard deviation is 2.3 mpg. Now suppose the car producer wants to test the hypothesis that μ, the mean number of miles per gallon, is 29.3 against the alternative hypothesis that it is not 29.3. Conduct a test using a significance level...

  • It is necessary for an automobile producer to estimate the mean number of miles per gallon...

    It is necessary for an automobile producer to estimate the mean number of miles per gallon (mpg) achieved by its cars. Suppose that the sample mean for a random sample of 5050 cars is 2727 mpg and the standard deviation of this sample is 3.63.6 mpg. Now suppose the car producer wants to test the hypothesis that μμ , the mean number of miles per gallon, is 2626 mpg against the alternative hypothesis that it is greater than 2626 mpg....

  • (1 point) It is necessary for an automobile producer to estimate the number of miles per...

    (1 point) It is necessary for an automobile producer to estimate the number of miles per gallon achieved by its cars. Suppose that the sample mean for a random sample of 130 cars is 28.2 miles and assume the standard deviation is 4 miles. Now suppose the car producer wants to test the hypothesis that u, the mean number of miles per gallon, is 30.9 against the alternative hypothesis that it is not 30.9. Conduct a test using a =...

  • A car dealer states that a new brand of car gets 35 miles per gallon on...

    A car dealer states that a new brand of car gets 35 miles per gallon on average. Suppose a consumer group claims that these cars get less than 35 miles per gallon. A sample of 40 cars is selected, and the sample mean for the 40 cars is 33 miles per gallon while the sample standard deviation is 3.8. Have the assumptions for this test been met? Why or why not? State the null and alternative hypotheses for this test....

  • (1 point) It is necessary for an automobile producer to estimate the number of miles per...

    (1 point) It is necessary for an automobile producer to estimate the number of miles per gallon achieved by its cars. Suppose that the sample mean for a random sample of 120 cars is 27.4 miles and assume the standard deviation is 3.5 miles. Now suppose the car producer wants to test the hypothesis that u, the mean number of miles per gallon, is 25.2 against the alternative hypothesis that it is not 25.2. Conduct a test using a05 by...

  • (1 point) It is necessary for an automobile producer to estimate the number of miles per...

    (1 point) It is necessary for an automobile producer to estimate the number of miles per gallon achieved by its cars. Suppose that the sample mean for a random sample of 100 cars is 30.6 miles and assume the standard deviation is 3 miles. Now suppose the car producer wants to test the hypothesis that u, the mean number of miles per gallon, is 30.4 against the alternative hypothesis that it is not 30.4. Conduct a test using a =...

  • (1 point) It is necessary for an automobile producer to estimate the number of miles per...

    (1 point) It is necessary for an automobile producer to estimate the number of miles per gallon (mpg) achieved by its cars. Suppose that the sample mean for a random sample of 40 cars is 29.3 mpg and assume the standard deviation is 3.4 mpg. Now suppose the car producer wants to test the hypothesis that u, the mean number of miles per gallon, is 28.4 against the alternative hypothesis that it is not 28.4. Conduct a test using a...

  • An individual wanted to determine the relation that might exist between speed and miles per gallon...

    An individual wanted to determine the relation that might exist between speed and miles per gallon of an automobile. Let X be the average speed of a car on the highway measured in miles per hour and let Y represent the miles per gallon of the automobile. The following data is collected: X 50 55 55 60 60 62 65 65 Y 28 26 25 22 20 20 17 15 a. In the space below, draw a scatterplot of the...

  • LaTech Stat Ch6: Problem 4 gallon achieved by its cars. Suppose that the sample mean for...

    LaTech Stat Ch6: Problem 4 gallon achieved by its cars. Suppose that the sample mean for a randorm sample of 100 cars is 29.7 miles and assume the standard deviation is 3.6 miles. Now suppose the car producer wants to test the hypothesis that , the mean number of miles per gallon, is 27 against the alternative hypothesis that it is not 27. Conduct a test using a 05 by giving the following OA.We can reject the null hypothesis that...

  • In a hypothesis testing problem a researcher wants to test the hypothesis Ho 20 versus Ha...

    In a hypothesis testing problem a researcher wants to test the hypothesis Ho 20 versus Ha 20 A sample of size 100 yielded a sample mean x = 19.25 and a sample standard deviation s 2.5. The P-value for the above test is 0013 .5000 0026 0147 0294

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