ZuoTi.Pro
Question

Two different batteries are being considered for an industrial application. A random sample of 30 of...

Two different batteries are being considered for an industrial application. A random sample of 30 of Battery A produces a mean of 16.4 hours of useful voltage with a standard deviation of 3.2 hours. A sample of 30 of Battery B produces a mean of 17.1 hours with a standard deviation of 2.7 hours. The researcher is interested in finding evidence at the .05 level that Battery A has a different average than Battery B.

1.Which of the following pairs of hypotheses correctly characterizes the question of interest?

H0: σA= σ B HA: σ A≠ σ B

H0: µA= µB HA: µA≠ µB

H0: pA= pB HA: pA≠ pB

H0: µA≥ µB HA: µA< µB

H0: σ A≤ σ B HA: σ A> σ B

2.What's the value of the test statistic (using sample A as sample 1)?

3. What is the p-value?

4.What is the correct decision?

math   Statistics-And-Probability   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

0 0
Add a comment
Know the answer?
Add Answer to:
Two different batteries are being considered for an industrial application. A random sample of 30 of...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

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

  • PLEASE ANSWER CLEARLY A manufacturer of flashlight batteries claims that its batteries will last an average...

    PLEASE ANSWER CLEARLY A manufacturer of flashlight batteries claims that its batteries will last an average of 34 hours of continuous use. An analyst wants to test the claim that the mean life expectancy of the flashlight batteries is different from 34 hours. During consumer testing, a random sample of 50 batteries lasted an average of 33.2 hours with a standard deviation of 2.6 hours. A One sample T summary hypothesis test: p: Mean of population Ho: = 34 HA:...

  • PLEASE ANSWER CLEARLY A manufacturer of flashlight batteries claims that its batteries will last an average...

    PLEASE ANSWER CLEARLY A manufacturer of flashlight batteries claims that its batteries will last an average of 34 hours of continuous use. An analyst wants to test the claim that the mean life expectancy of the flashlight batteries is different from 34 hours. During consumer testing, a random sample of 50 batteries lasted an average of 33.2 hours with a standard deviation of 2.6 hours. One sample T summary hypothesis test: : Mean of population Ho! = 34 HA: 34...

  • PLEASE ANSWER CLEARLY A manufacturer of flashlight batteries claims that its batteries will last an average...

    PLEASE ANSWER CLEARLY A manufacturer of flashlight batteries claims that its batteries will last an average of 34 hours of continuous use. An analyst wants to test the claim that the mean life expectancy of the flashlight batteries is different from 34 hours. During consumer testing a random sample of 50 batteries lasted an average of 33.2 hours with a standard deviation of 2.6 hours. A One sample T summary hypothesis test: : Mean of population Ho: = 34 HAM...

  • A random sample of 8 size AA batteries for toys yielded a mean lifespan of 3.65...

    A random sample of 8 size AA batteries for toys yielded a mean lifespan of 3.65 hours with standard deviation, 0.76 hours. In a normal probability plot of battery lifespans, all of the points fell between the curved lines. Find the margin of error for a 99% CI.

  • A computer company claims that the batteries in its laptops last 4 hours on average. A...

    A computer company claims that the batteries in its laptops last 4 hours on average. A consumer report firm gathered a sample of 16 batteries and conducted tests on this claim. The sample mean was 3 hours 50 minutes, and the sample standard deviation was 20 minutes. Assume that the battery time distribution as normal. Test if the average battery time is shorter than 4 hours at α = 0.05. Use the 5-step method. b) Construct a 95% confidence interval...

  • An engineer is comparing voltages for two types of batteries (K and Q) using a sample...

    An engineer is comparing voltages for two types of batteries (K and Q) using a sample of 96 type K batteries and a sample of 98 type Q batteries. The mean voltage is measured as 8.79 for the type K batteries with a standard deviation of 0.661, and the mean voltage is 9.05 for type Q batteries with a standard deviation of 0.206. Conduct a hypothesis test for the conjecture that the mean voltage for these two types of batteries...

  • Power +, Inc. produces AA batteries used in remote-controlled toy cars. The mean life of these...

    Power +, Inc. produces AA batteries used in remote-controlled toy cars. The mean life of these batteries follows a normal distribution with a mean of 38 hours and a standard deviation of 5.9 hours. As a part of its quality assurance program, Power +, Inc. tests samples of 16 batteries.    a. What can you say about the shape of the distribution of the sample mean?       Sample mean (Click to select)NormalUniformBinomial Round answers to four decimal places. b. What...

  • Power +, Inc. produces AA batteries used in remote-controlled toy cars. The mean life of these...

    Power +, Inc. produces AA batteries used in remote-controlled toy cars. The mean life of these batteries follows a normal distribution with a mean of 37 hours and a standard deviation of 5.6 hours. As a part of its quality assurance program, Power +, Inc. tests samples of 16 batteries.    a. What can you say about the shape of the distribution of the sample mean?     Sammple mean normal (already have this answered) Round answers to four decimal places....

  • 1. A bearing used in an automotive application is supposed to have a nominal inside diameter...

    1. A bearing used in an automotive application is supposed to have a nominal inside diameter of 3.81 cm. A random sample of 25 bearings is selected and the average inside diameter of these bearings is 3.8037 cm. Bearing diameter is known to be normally distributed with standard deviation σ 0.03 cm. (a) Compute a 95%-confidence interval for the mean inside diameter. (b) Test the hypothesis H0 : μ = 3.81 versus H1 : μ关3.81 using α-001. What is the...

  • The batteries produced in a manufacturing plant have a mean time to failure of 30 months,...

    The batteries produced in a manufacturing plant have a mean time to failure of 30 months, with a standard deviation of 2 months. I select a simple random sample of 400 batteries produced in the manufacturing plant. I test each and record how long it takes for each battery to fail. I then compute that the average failure time of the 400 batteries is 29.9 months with a standard deviation of 2.15 months. In this scenario, the value 29.9 is:...

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