Question 155280: given the following raw scores on a standard 10 poing scale. calculate the 95% confidence interval (use the t-score method) the interval is from ___ to___10,8,4,4,6,2,3,2,2,5,3,8,5,7,9,9,6,9,5,4,1,5,4,2,8,
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! given the following raw scores on a standard 10 point scale.
Calculate the 95% confidence interval (use the t-score method)
the interval is from ___ to___
10,8,4,4,6,2,3,2,2,5,3,8,5,7,9,9,6,9,5,4,1,5,4,2,8,
-----------------------------------------------------------------
sample mean = 5.083333...
sigma = 2.586195...
n= 25
t* = 2.064 is the t-value for 95% confidence and df=24
------------------------
E = 2.064[2.586195/sqrt(25)] = 1.067581
-------------------------
95% CI: 5.083333-1.067581.. < u < 5.083333+1.067581..
95% CI: 4.015752.. < u < 6.150914...
=========================================
Cheers,
Stan H.
|
|
|
