JotCast | MTH 220 May 13 Open Questions

MTH 220 May 13 Open Questions

View Full Chat Next Page

Greg Miller

9:07

Gone.. Zoom Office Hours start at 9:45 AM...

KAsey

9:06

lol good night!

Greg Miller

9:06

Going twice...

9:05

Alright.. final questions.. if any.. going once.....

KAsey

9:03

ok thanks!

Greg Miller

9:03

Right. Correct.

KAsey

9:03

but here we do not subtract by 1 because the complement rule is not needed

Greg Miller

9:02

YEs.. good.. correct

KAsey

9:01

Then you add those up to get the p-value?

Greg Miller

In this case.. 2 or less is just 0, 1, 2... so that's already just a few computations... complement rule won't shorten it.

The issue is.. will considering the opposite make things shorter..

9:00

Well, you don't have to use the complement rule because the complement rule WON'T make the calculations shorter. Use of the rule doesn't really have anything to do with "looking for less than" or "looking for greater than"

Kasey

8:59

Sorry one more thing, on the dentist case you do not have to use the complement rule because we are looking for less than

8:51

Thanks! Have a good night and see you tomorrow.

Greg Miller

8:50

Struggles are ok... this is a 17 day grind.. you just have to roll the best you can each day. Serious stamina required... but you can do it...

Kasey

8:49

Trust me it happens to the best of us! Yay! I struggled today.

Greg Miller

8:49

Only 4 videos for tomorrow.. not 5 !!

Well, that's what I get from cutting and pasting. My bad.

8:48

LOL

Kasey

8:47

gurhhhh! You can't be doing that to me Dr. Miller! I'm already clueless and confused! lol jk it happens! ok I'm keep trucking and I'll likely talk to you in the morning as I thought todays zoom was helpful. I was reading the material and it seemed like a different language from what you just told me in the videos so I'm going to wake up and look at that again first thing in the morning. Thanks for your help!

Greg Miller

8:44

Yep.. typo..

Kasey

8:44

So the first bullet should say n=25?

Greg Miller

8:43

Yep. It should.. I'm going to look at it on D2L right now to be sure..

8:42

No.. I caused it. I didn't realize I did that... I'll change it in the morning. That's on me.

Kasey

8:42

sorry for the confusion

Greg Miller

8:42

My bad. Typo. I'll fix it.

Kasey

8:41

yes but the question before says n=18

Greg Miller

8:41

I don't have the dentist case study right in front of me.. isn't the sample size 25 in the dentist problem?

Kasey

8:40

I don't use the n=18 but n=25 to calculate the p-value

Greg Miller

8:38

One of those values will be "2".. but since Ha has "<" in it, the p-value is the chance of 2 OR LESS successes...

when you go to use the binomial formula you will use n = # of trials (25)... p from Ho (.3) and then various values of y

8:37

well... not sure what you mean by that...

Kasey

independent*

8:36

but when I go to do the binomial formula that 2 changes to represent the number of indecent outcomes

Greg Miller

8:36

The p-value is the "chance of your test statistic OR ONE MORE EXTREME... when Ho is true"

Now.. when you compute the p-value in the dentist case you will use y = 2.. but you will ALSO USE OTHER values of "y" as well to make the entire calculation.

8:35

Yes.. that is correct.

Kasey

8:34

Here, I think the answer to the 4th question is 2 which is the number of successes.

Greg Miller

..but "n" and "p" are not.

8:33

Since you usually use the binomial formula several times in a row.. ."y" is changing each time you use it...

Connecting…