tracy10

Can someone give me the formula to work this out, I am not sure. Find the value of t for the difference between two means based on an assumption of normality and this information about two samples. (Use sample 1 - sample 2. Give your answer correct to two...

Find the 95% confidence interval for the difference between two means based on this information about two samples. Assume independent samples from normal populations. (Use conservative degrees of freedom.) (Give your answers correct to two decimal places....

Could someone work a problem like this one, for an example. Complete the hypothesis test with alternative hypothesis ìd < 0 based on the paired data that follow and d = M - N. Use á = 0.02. Assume normality. M 49 67 45 57 57 48 N 57 68 47 60 64 55 (a) Fin...

The corrosive effects of various soils on coated and uncoated steel pipe was tested by using a dependent sampling plan. The data collected are summarized below, where d is the amount of corrosion on the coated portion subtracted from the amount of corrosi...

It is a 2 samples, those answers are not right, but I desperately need your help. I do appreciate your help.

I am sorry those answers were right, I was putting them on another proboem that I have, and I need your help on it, my sample 1 Number is 22, mean 31, and Std dev. 28, Second sample is Number 25, mean 25, Std. Dev. 35. I get as far as I did on the one abo...

this is not right can you explain how to get the right answer by working it out. there is a few of us working together and we all have different problems so it helps to see it worked out.

Anyone know a simple way to determine the p-values, I keep missing them. If I see example I usually can figure it out but did not work this time.

Sorry I have posted this one twice. Just having a lot of problems with getting the p-value and getting discouraged.