ZuoTi.Pro
Question

Use the following description to answer the next three (3) questions. Engineers are interested in testing the claim that the resistance of electric wire can be reduced by alloying. A random sample of 32 standard wires yielded , 0.136 ohm and s, -0.004 ohm. Another random sample of 32 alloyed wires yielded x2- 0.083 ohm and s2- 0.005 ohm. At the o.05 significance, do the data support the claim? 21. State the appropriate hypotheses. A. B. C. Ho: μι-Hz versus Ha:Ha < μ2 Ho: μ.-112 versus Hai μ.> μ2 Ho: Ha-Hz versus Hai μ.-Hz 22. Which of the following is used to compute the test statistic? 0.136-0.083 A. 004, 0.005 32 32 0.136-0.083 B. 0.0042 o.00s2 32 0.083-0.136 C. 005,0.004 32 32 0.083-0.136 oos2 0.0042 32 23. What is the distribution of the test statistic? (In other words, what distribution should be used to look up a critical value or p-value for this problem?) A. t(31) B. t(32) C. t(62) D. t(64)
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

Given dats S20 005 μ-yzse, and TA unknown and the boo S Pooled les aple vantance obter hie des thak check) ni ni erc the Poole 32-+32-2 Sp =o.ooys C0136-0.08.3)-0 0-005 32 32 ^reel wherc

0 0
Add a comment
Know the answer?
Add Answer to:
Use the following description to answer the next three (3) questions. Engineers are interested in testing...
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

  • (1 point) (Give answers to at least two decimal places. For simplicity, use the standard normal...

    (1 point) (Give answers to at least two decimal places. For simplicity, use the standard normal distribution bacause the samples are both large.) In order to compare the means of two populations, independent random samples of 246 observations are selected from each population, with the following results: Sample 1 Sample 2 (a) Use a 96 % confidence interval to estimate the difference between the population means (M1-M2). (b) Test the null hypothesis: Ho : (41-42-0 versus the alternative hypothesis: 11...

  • You may need to use the appropriate technology to answer this question. Consider the following hypothesis...

    You may need to use the appropriate technology to answer this question. Consider the following hypothesis test. The following results are from independent samples taken from two populations assuming the variances are unequal Sample 1 Sample 2 n1-352 x1-13.6x2-10.1 s, 5.5 s = 8.1 n2-40 (a) What is the value of the test statistic? (Use X1-x2. Round your answer to three decimal places.) (b) What is the degrees of freedom for the t distribution? (Round your answer down to the...

  • 31. (4 points (bonus)) Use the following information to answer the question. A research company developed...

    31. (4 points (bonus)) Use the following information to answer the question. A research company developed a drug to help lung cancer patients live longer. Without treat- ment, the average life expectancy for lung cancer patients is 3.2 months. The research company claim that their drug help cancer patients live longer. Suppose he does a hypothesis test with a significance level of 0.05. Symbolically, the null and alternative hypothesis are as follows: Ho: μ =3.2 and Ha: μ > 3.2....

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