
#1
Jun2110, 07:01 PM

P: 9

Hi, I need help understanding how do I use tdistribution to estimate the tα/2 . Also what is meant when it asks "verify your result with empirical rule"




#3
Jun2110, 07:15 PM

P: 9

no i dont, what is it?




#4
Jun2110, 07:29 PM

Sci Advisor
HW Helper
P: 2,483

stat help
It is the level of probability to be used for testing. The probability that the result is due to chance.
Do you know what a probability distribution is? 



#5
Jun2110, 07:50 PM

P: 9

Basically i'm working on a problem that asks that part of the question. I have solved for the population mean, and have different samples with 3 data in them. I calculated the xbar of those samples with the standard dev and have gotten their confidence intervals.




#6
Jun2110, 08:04 PM

Sci Advisor
HW Helper
P: 2,483

That's all very good; how does your original question about the t distribution relate to the rest?




#7
Jun2110, 11:19 PM

P: 9

here is the question:
 Find the population mean and its standard deviation  List all possible samples of size 3 from those 5 units  From each sample, compute the mean, standard deviation, and 95% confidence interval. Use tdistribution to estimate the tα/2 because we have a small size. 



#8
Jun2210, 08:58 AM

P: 300

Questions like this belong in the Homework forum. Please post there next time. Hey, I don't make the rules around here.



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