Recent content by lilyungn

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 t-distribution to estimate the tα/2 because we have a small size.

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 x-bar of those samples with the standard dev and have gotten their confidence intervals.

no i dont, what is it?

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

I have solved out everything, I just need help to know how I get the t-distribution?

I don't understand how you did it, can you show the work? thanks

Homework Statement I need help solving this problem: Let A, B, C, D, and E are 6 units of a population. The measurements associated with A, B, C. D, E units are 76, 77, 78, 81, and 82, respectively. -Find the population mean and its standard deviation -List all possible samples of size 3...

Hi all I'm currently taking Statistics 1 and I'm stuck on a homework problem that I've been trying to figure out for a while...hopefully one of you guys can enlighten me on how to do it..heres the question: Transportation officials tell us that 80% of drivers wear seat belts while driving...