SOLUTION: Can someone please help me figure out how to work this out: Find the 0.99 confidence interval for . In an effort to compare college costs in State of Michigan, a sample of 36 jun

Question 864666: Can someone please help me figure out how to work this out:
Find the 0.99 confidence interval for .
In an effort to compare college costs in State of Michigan, a sample of 36 junior students is randomly selected statewide from the private colleges and 36 more from the public colleges. The private college sample resulted in a mean of $27,650 and the public college sample mean was $11,360.Assume the annual college fees for private colleges have a mounded distribution and the standard deviation is $1725. Find the 95% confidence interval for the mean costs for private colleges.

Thanks!

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
In an effort to compare college costs in State of Michigan, a sample of 36 junior students is randomly selected statewide from the private colleges and 36 more from the public colleges. The private college sample resulted in a mean of $27,650 and the public college sample mean was $11,360.Assume the annual college fees for private colleges have a mounded distribution and the standard deviation is $1725. Find the 95% confidence interval for the mean costs for private colleges.
----------------------------
sample mean:: 27,650
E = z*s/sqrt(n) = 1.96*1725/sqrt(36) = 563.5
-----
95%CI: 27,650-563.5 < u < 27650+563.5
------------------------------------
Cheers,
Stan H.
--------------------
RELATED QUESTIONS
Could someone please explain this to me? I'm having a really hard time understanding how... (answered by rothauserc)

a random sample of 88 observations produced a mean x = 25.8 and standard deviation s=2.7. (answered by ewatrrr,Theo)

please help me. i cant figure out how to do this. thank you for your time in trying to... (answered by funmath)

Can someone please help me understand this question? A 99% confidence interval (in... (answered by stanbon)

Help, I can not figure out how to get the confidence interval for a t distribution. I... (answered by stanbon)

I am trying to work out this problem as we speak, but I don't know how to figure out the... (answered by jim_thompson5910)

Can someone please explain how to solve this equation 5x+4y-20=0 I need to plot this on (answered by ewatrrr)

can you please help me figure out how to find the interval notation for this and also how (answered by rothauserc)

The question states: Find an equation for the line. 4. through (-8,8) and parallel to (answered by nerdybill,MathLover1)