SOLUTION: 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 t

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

RELATED QUESTIONS
Which of the following is NOT one of the five steps in the hypothesis testing procedure? (answered by ewatrrr)

Has the cost to outsource a standard employee background check changed from 2005 to 2006? (answered by stanbon)

samples of size 81 are taken from a population of size 500 with mean 10 and standard... (answered by CPhill)

To conduct a hypothesis test of the claim that the population mean satisfaction rating of (answered by Theo)

A random sample of size 10 is selected from a normal population, where the population... (answered by Boreal)

I need help can some please help me with the following question below please 1.In a... (answered by stanbon)

A sample of 36 observations is selected from a normal population. The sample mean is 12,... (answered by reviewermath)

A random sample of 121 observations from a population with a standard deviation of 50... (answered by stanbon)

T/F 1. In order to compare the characteristics of two different popuations, a sample... (answered by stanbon)