Question 234356: For a one-tailed test (lower tail), a sample size of 26 at 90% confidence, t =
For a one-tailed test (upper tail) at 87.7% confidence, Z =
In a two-tailed hypothesis test the test statistic is determined to be -2.5. The p-value for this test is
For a two-tailed test, a sample of 25 at 80% confidence, t =
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! I recommend you draw the picture of each of these so you can
see the meaning of the problem and the answer.
-----------------------------
For a one-tailed test (lower tail), a sample size of 26 at 90% confidence,
t = invT(0.10,25) = -1.3163
-----------------------------------
For a one-tailed test (upper tail) at 87.7% confidence,
Z = invNorm(0.877) = 1.1601
---------------------
In a two-tailed hypothesis test the test statistic is determined to be -2.5. The p-value for this test: 2P(z < -2.5) = 2*normalcdf(-100,-2.5) = 0.01242
----------------------
For a two-tailed test, a sample of 25 at 80% confidence,
t = +/-invT(0.10,24) = +/-1.3178
=======================================
Cheers,
Stan H.
|
|
|
