Adam Lucas

05:44

how is this online instruction thing working out for people?

candice

06:05

You’re doing a great job :)

Kevin Truong

06:07

Pretty good

Marisol Trejos

06:18

Alright

Christina Ji

06:21

Pretty ok!

Kaci Gu

06:51

Good

Adam Lucas

08:03

Is the warmup making sense?

Kaci Gu

09:03

yes

Claire McCallick

12:02

hi!

Rebecca Hu

12:05

yes

Sophie Liu

12:06

yes!

Kyra Terenzio

12:08

Yes

celine

12:10

yes

Kaci Gu

13:41

bernoulli

Rebecca Hu

13:43

Bernoulli

ashley minooka

13:44

bernoulli

Andrew Huang

13:44

bernoulli

brendanco

13:46

^

Sophie Liu

16:17

yes

Grégoire

16:19

yes

Jessica T Chau

16:19

yes

Zachary Zhu

16:20

Yes

Rebecca Hu

16:21

yes

Claire McCallick

16:21

good!

YeJin Ahn

16:21

yes

Andrew Huang

16:22

yes

brendanco

16:23

yup

Matthew Lin

16:25

yes

Maryam Pourshariati

16:26

yeah

VMoza

16:35

WOOOOOOOOOOOO

lucyzhang

20:49

U changed it to over 4 for prefecture notes

Chloe Guo-UC Berkeley-Econ&Data

21:17

Why is it 6?

lucyzhang

21:27

Shouldn’t it be 5

isaacecheto

21:50

Because “over 5” wouldn’t include 5

celine

21:53

he's doing both what he meant to ask and really asked

lucyzhang

22:01

If its over 4 it should be 5?

celine

22:18

he's doing "over 5"

lucyzhang

22:25

Oh okay u r doing over 5 instead of over 4

celine

22:30

yes

carinamassana

23:48

Can you explain how you got k one more time

louisnorris

23:57

+1

celine

24:20

why are u doing 1/k^2 as opposed to sig^2/c^2 ?

Jooee Karwande

24:30

^^

Rebecca Hu

25:55

Should we always calculate both Markov and chevyshev if possible and compare to see which is better?

Marisol Trejos

26:10

^^^

celine

26:15

ok then howd u get the k value

celine

26:21

can u pls go over that one more time

Noah Wadhwani

26:45

Professor Lucas do you have any pets?

celine

26:51

ahahahahah

celine

27:08

thank u

ashley minooka

28:13

what is a

Andrew Huang

28:17

^

candice

28:19

that’s q

celine

28:21

that's q

Stephen Nguyen

28:28

that’s q

ashley minooka

28:29

ohhhh

ashley minooka

28:35

fail, thank u

Michael navruzyan

28:59

that's q

mike

31:19

whats the a value again?

Jooee Karwande

31:22

I am stuck

Joshua

31:23

I’m stuck

celine

31:27

q, not a

Kaci Gu

32:36

1/q

Sophie Liu

32:39

method of indicators?

mike

32:42

use indicators

Michael navruzyan

32:44

6 * e(x1)

Kaci Gu

33:02

1/p*

VMoza

33:24

memoryless, so use 10 * e[x1], where e[x1] = 1/p

mike

34:39

I see each of those independent x values as indicators

lucyzhang

35:47

How does this apply to the fomula

Chloe Guo-UC Berkeley-Econ&Data

35:48

when solving these problems, do we always calculate var first and then drive SD from there, or can we go direcltly for sd

Jooee Karwande

35:59

what are the numbers in the fraction

aaronwu

36:25

How do you calculate p and q

lucyzhang

36:28

How does this apply to the fomula : square root of q over p

carinamassana

36:36

Why did you multiply 10 by q/p^2

Chloe Guo-UC Berkeley-Econ&Data

36:41

Yes thanks!!

Claire McCallick

37:11

"Why did you multiply 10 by q/p^2" - same question

Jooee Karwande

37:11

Thank you!

aaronwu

37:30

thx

Kyra Terenzio

37:43

can you please go over again why you found x1 and x2 independently until the third success?

lucyzhang

38:01

yup

lucyzhang

38:06

Thank you

Noah Wadhwani

38:10

You’re simply squaring sqrt(q)/p and because there are 10 independent trials you multiply by 10

Kyra Terenzio

39:27

Yes, I understand the independence

mike

39:32

would using the SD equation not get the same result?

Kyra Terenzio

39:35

Because of the die

lsandoe

43:15

E(x) = 50 not 10, right?

Zachary Zhu

43:30

Answer is no

lsandoe

43:32

I think the answer is no

Zachary Zhu

43:56

We know that np = 50, sqrt(npc) = 10

Zachary Zhu

43:59

npq*

Zachary Zhu

44:08

And then you realize that q gives you a value above 1

Zachary Zhu

44:10

Which isn’t possible

candice

46:26

Is it ok to write q in terms of 1-p and solve for n?

candice

46:54

I got n = -50 which tells me it would not be possible for the random variable to be binomial

brendanco

47:33

Restart the app

alfredochavez

48:31

Just in the mean time is there any notice for a webcast to view later?

Joshua

49:09

Nw Prof Lucas!

VMoza

49:25

we love you professor

lsandoe

50:01

for fun: https://calfalcons.berkeley.edu/webcams/?fbclid=IwAR1o9BlSq37EoUayDwesNG5g0-0QNCAr7Xz_ngxa0hyyHhFj3AIl2r_-mkY

brendanco

53:34

https://www.mercurynews.com/2020/03/16/coronavirus-six-bay-area-counties-to-shelter-in-place/

Joshua

54:43

Do any of you guys know if Berkeley is going to move towards reduced course load or not?

Adam Lucas

55:28

can you hear me

lsandoe

55:28

I think ASUC is petitioning for extending p/np to major classes

lsandoe

55:35

no

Maryam Pourshariati

55:38

no

michellecan

56:05

no

Joshua

56:15

No

Claire McCallick

56:24

adam - go to the chat page and click on your mute button in the top right corner

Claire McCallick

56:40

yes

Kaci Gu

56:41

yes

Marisol Trejos

56:41

yes

Joshua

56:41

yep

ashley minooka

56:42

hello!

isaacecheto

56:43

yep

Chloe Guo-UC Berkeley-Econ&Data

57:51

is this 7.2

Chloe Guo-UC Berkeley-Econ&Data

57:54

What is it called

ashley minooka

58:26

:c

Joshua

58:29

:(

ashley minooka

58:42

thank u prof

Marisol Trejos

58:43

Bye :(

Jessie

58:44

thank you!!

brendanco

58:47

Your pencil might be dead

Joshua

58:47

Thanks Prof Lucas!

isaacecheto

58:48

Have a good day prof

Claire McCallick

58:50

take care

Maryam Pourshariati

58:50

thank you

rob

58:50

thanks!

Kimberly Shen

58:52

Thank you!

Michael navruzyan

59:02

can you go back up to the warm up question plz?

Chloe Guo-UC Berkeley-Econ&Data

59:03

can we go over the warm uop one more time pls

Michael navruzyan

01:02:35

thank you prof

mike

01:05:30

I'm good Ill see you Wednesday!

Chloe Guo-UC Berkeley-Econ&Data

01:05:40

Thank u!!