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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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Catracho Catracho
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5 years ago
Suppose a sample of 49 paired differences that have been randomly selected from a normally distributed
population of paired differences yields a sample mean of  and a sample standard deviation of  sd = 7.

(a)
Calculate a 95 percent confidence interval for µd = µ1 – µ2. (Round your answers to 2 decimal places.)

  Confidence interval = [ ,  ]

(b)
Test the null hypothesis H0: µd = 0 versus the alternative hypothesis Ha: µd ≠ 0 by setting α equal to .10, .05, .01, and .001. How much evidence is there that µd differs from 0?

  t =
  Reject H0 at α equal to    evidence that µ1
 differs from µ2.

(c)
The p-value for testing H0: µd < 3 versus Ha: µd > 3 equals 0.0256. Use the p-value to test these hypotheses with α equal to .10, .05, .01, and .001. How much evidence is there that µd exceeds 3? What does this say about the size of the difference between µ1 and µ2? (Round your p-value answer to 4 decimal places.)

  t =  ; p =
  Reject H0 at α equal to ,  evidence that µ1 and µ2
 differ by more than 3.


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bio_manbio_man
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Catracho Author
wrote...

5 years ago
Brilliant ツ
ofsuahasiufhoas
wrote...

Yesterday
Good timing, thanks!
shelbycox
wrote...

2 hours ago
Smart ... Thanks!
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