Question 251649: a hypothesis will test that two population means are equal. a sample of 10 with a standard deviation of 3 is selected from the first population and a smaple of 3 is selected from the first population. the standard deviations are not equal. testing the claim at the .01 level, what is the critical value? Assume unequal standard deviations
a. 2.845
b. 2.787
c. 2.807
d. 2.977
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! a hypothesis will test that two population means are equal. a sample of 10 with a standard deviation of 3 is selected from the first population and a sample of 3 is selected from the first population with standard deviation = 8. The standard deviations are not equal.
Testing the claim at the .01 level, what is the critical value?
Assume unequal standard deviations
============
df = n1+n2-2 = 10+3-2 = 11
---
Critical value for 2-tail test, when df=11 and alpha = 1%
= invT(0.995,11) = 3.1058
=====================
That is not one of your listed answers but it is the
critical value for your posted problem.
---------------------
Cheers,
Stan H.
---------------
a. 2.845
b. 2.787
c. 2.807
d. 2.977
|
|
|
