Question

can anyone help me with STATISTICS?!?!

Answer 1

Yes.

Answer 2

Thanks. So basically I'm on the Chi-square distribution stuff. i'll attach the question.

Answer 3

I keep trying to download the program for mt Ti-84 plus to get this program but it's not working so I result to doing the question by hand and I only found how to do the right sided questions and not the left. because there is a table for the right sided ones and not the left.

Answer 4

Ah, I see, because the TI-84 doesn't have a built-in inverse chi-square function . . .
hmmm.

Answer 5

yeah i also have a few other questions which are nothing like the chi-distribution which you might be more familiar with lol I am really stuck on a lot of these homework questions :( would you might taking a look?

Answer 6

I think for the left-side value, you can use the complement. If I recall how to do these properly, if the C-level is 80% then that means there is 10% on each side, so for the left-side value, use a right-side value of 90%.
Does that make sense?

Answer 7

oohhh okay let me try that. so with the right side, i'd be using .1 and 20 to get the 28.412 from the table. now i will use .9? and 20?

Answer 8

actually i think it's lik this.
left side would be 1-.2 (because we used 1-.8 for the right side)
and we get .8 then divde that by 2. which is .4
and we use .4 and 20 to get the answer and lets see if thats right!!! lol

Answer 9

wait no! you were right lol it's just the compliment of the resulted value, AFTER subtracting and dividing.

Answer 10

okay okay i get it now! but i still need help on a few more.

Answer 11

Awesome!

If they are different kinds of questions, post them as new after closing this one.

Answer 12

ok.