John R Warren

39:20

https://drive.google.com/file/d/1e-fvBNcaVp8UVjNRGvBEJ6OtSy-68cSV/view?usp=sharing

Marianne V Reilly

53:19

no

Julia Grove

53:35

we got through the first slide

Marianne V Reilly

56:01

wait can you back up on the z score

Sara McClendon

56:12

^^

Ashley Ochoa

56:32

how did you determine the z score?

Marianne V Reilly

56:47

I still can't figure out how you got the z table

Morgan Reed

56:49

Can we just use the T table to find the confidence intervals? They’re stated at the bottom

Jaden Lubarski

56:52

Is it ok to use the last column on the t-table to find the multiplier?

Madlyn J Ott

57:16

Does it always have to be 10%

Marianne V Reilly

57:24

me too

Jake

57:29

I used the t-table and got 1.28 as well…so I think you can?

Idman Adan

57:39

No it depends on the confidence interval

Neeraj Rajasekar

57:52

So, "Yes and No" is the technical answer. I think we'll get to the why of the T vs Z table kinda stuff later

Marianne V Reilly

58:49

wait I am still lost

Jacob E Lanning

58:50

RIP I did that part wrong sorry group

James Peterson

58:57

No worries

Alexandra Aurelius

59:11

how did you decide to use .08?

Morgan Reed

59:34

Definitely easier

Neeraj Rajasekar

59:49

80% came from the question. We'll do 95% next.

Idman Adan

01:00:04

So you want 80% in the middle. 20% is left to get to 100%. That means on either side of the 80% there is .10 or 10%. You look for the number on the Z table closest to 10 percent to find the multiplier.

Neeraj Rajasekar

01:00:16

Idman is correct.

Madlyn J Ott

01:00:48

so if there is 5% left would that mean 2.5% on each side of 95%?

Idman Adan

01:00:57

yes

De Andre T Beadle

01:00:59

yes

Ashley Ochoa

01:01:12

would you be able to go a little slower?

Neeraj Rajasekar

01:01:23

We're gonna do the same thing twice here if that helps

Kathryn M Meenan

01:05:21

it was really hard to see the figure on the powerpoint once you sent us to breakout rooms

Jacob E Lanning

01:05:37

You an hit the magnifying glass to zoom in

Jacob E Lanning

01:05:43

can*

Sara McClendon

01:08:12

can you slow down a little? I cant keep up with writing it out

Hayat Muse

01:08:15

In the homework when I subtracted P2 from p1 I got a negative number, what do we do in these cases?

Nia G Steinhagen

01:08:38

id really appreciate it a little slower as well

Neeraj Rajasekar

01:08:47

It comes down to the sentence where you write out the interpretation

Ryan A Moon

01:08:56

It doesn’t matter if its negative or positive, just interpretation

Neeraj Rajasekar

01:08:58

Negative numbers still indicate a "difference," per se

Kyle Theisen

01:09:30

And when you say "when I do the math," would you do the math lol

Ashley Ochoa

01:10:04

I got lost after he circled the answer

Ashley Ochoa

01:10:14

can you go over that?

Marianne V Reilly

01:12:31

how do you enter (+-) into a calculator?

Neeraj Rajasekar

01:12:43

+- means "two numbers"

Neeraj Rajasekar

01:12:53

do a simple A + B, then again with A - B

Kyle Theisen

01:12:53

It just means the positive and the negative of the same number

Neeraj Rajasekar

01:13:06

doesn't require a fancy number. it's a math symbol which means "add AND substract"

Kyle Theisen

01:14:08

Sample Size?

Morgan Reed

01:14:11

Larger sample size

Alexandra Aurelius

01:16:09

so you can get a negative percentage but we’re to treat it as an absolute value?

Neeraj Rajasekar

01:16:40

More or less, Yes. BUT only relevant when comparing two sub populations (Dems and GOP, for example)

Neeraj Rajasekar

01:17:00

Because the negative percentage's sign is less important than its magnitude, per se

Hayat Muse

01:18:02

Can I get reassigned? I was in a group by myself

Marianne V Reilly

01:18:31

Me Too

Jacob E Lanning

01:18:41

Its a glitch its happened in my other classes

Jacob E Lanning

01:18:47

They have to leave and come back

Madelyn L Wolf

01:37:18

Cant we just use the percentages on the last row of the t table to find the z score?

Kyle Theisen

01:37:58

I did a Z distribution because I'm silly, but I got 8.43-8.56

Kathryn M Meenan

01:38:27

in the powerpoint you had given 1.96 for T confidence interval for 95%

Kathryn M Meenan

01:38:52

sorry, I meant the recorded lecture

Jaden Lubarski

01:39:25

Why is the multiplier 2.0 instead of 1.98?

Madelyn L Wolf

01:39:31

Where are you getting the 2

Madelyn L Wolf

01:40:33

Didn’t you do t/2 in the recorded lecture as well when doing differences? Or z/2 I don’t know which one it is

Ian M Gullickson

01:47:26

Thank you!

Leah Zhu

01:47:38

Thank you!