1) Bell Ringer
2) Homework review
3) Independent Events
4) Review for Quiz
Objective: Students should be able to identify dependent and independent events and calculate probability accordingly.
Bell ringer( we went over it in class)
|
| Biology | Physics | Chemistry | Total |
| Male | 40 | 16 | 35 | 91 |
| Female | 15 | 24 | 20 | 59 |
| Total | 55 | 40 | 55 | 150 |
1) P(M)= 91/150
2) P(M) ∪ P(C)= 91+20/150 = 111/150
3) P(P) ∩ P(M)= 16/91
Homework Review
During class, we went over question 6 from page 483.
You are supposed to draw a venn diagram to solve the problem. (I'm so sorry- I tried many different ways to copy my venn diagram from microsoft word but it won't work.)
The venn diagram has two circles
1st circle is labeled Mu for mumps and the 2nd circle is labeled as Me for Measles.
The part where the two circles overlap(in the middle) is labeled as Me and Me because it contains both
So, here are the values
Mu= 2
Me=12
Mu and Me(middle)= 12
Outside the circle but inside the box (neither mu or me)= 4
All these values add upto 30.
a) P(Mu)= 14/30
b) P(Mu) - P(Mu ∩ Me)
24/30 -14/30 = 2/30
(you don't have to reduce it because IB doesn't expect you to reduce it on the exams)
c) P(Mu' ∪ Me')= 4/30
d) P(Mu ∩ Me)/ P(Mu)= 12/14
Tomorrow's Quiz
- probability question including chart, tree diagram, and venn diagram.
September 23, 2010: Chapter test for Chap. 14.
Practice question:
Out of 30 kids, 20 love strawberry and chocolate, 24 love chocolate and 23 love strawberry.
a) How many kids love neither of the flavors mentioned above?
b) What is the probability that a kid loves chocolate ONLY?
c) What is the probability that a kid loves chocolate given he loves strawberry?
d) What would you pick? Strawberry or Chocolate? :)
Hey everyone :)
I'm so sorry for not posting the venn diagram :\ I really tried to for the past hour but it didn't work. If you have any questions about today's blog, please let me know. I will be more than glad to help you out! I hope the practice question was easy. Do not forget- we have a quiz tomorrow!!!
Have a blessed day guys.
Lillian Sangha
It's ok! : ) I'm kinda confused but i think i figured it out..
ReplyDeletea) 3 out of 30 loved neither.
b) 4 out of 30 loved chocolate.
c)4 out of 23???? loved chocolate given that they love strawberry.
d)i love strawberrt!! : )
lillian i think im wrong but this is what i got.. if i am can you explain what i did wrong. please and thank you!
Hey lily nice post
ReplyDeletea)3 kids liked neither
b)4/30 chance that a kid only likes chocolate
c)4/23 chance of liking chocolate given that they like strawberry
d)neither i want ice cream!!!
alryt uuumm i get sorta confused with this but i THINK i may got it
ReplyDeletea. 3/30
b. 4/30
c. 4/23
d. i'd be one of those kids who love both =]
nice question lillian but it made me crave ice ceam
ReplyDeletea. 3/30
b. 4/30
c. 4/23
d. i want strawberry!!
well on the venn diagram
ReplyDeletetwo circles nd a middle
strawberries has 3 because the middle is 20(the kids that love both)
and chocolate has 4.. that adds to 27, so that makes 3 loves neither.. 30 - 27 = 3
so..
a)3/30
b)4/30
c)23/30
d)i like chocolate (: xD
sorry, idk what i did that for, but for c) i meant 4/23 because 4 like chocolate, and given they like strawberry 20+3=23
ReplyDeleteso 4/23.
okk so,
ReplyDeletea)3 like neither
b)4/30
c)4/23
OMG!i want chocolate covered strawberries!! :D
a. 3/30
ReplyDeleteb. 4/30
c. 4/23
d. I would pick Strawberry....
My answers;
ReplyDeleteA) 3/30
B) 4/30
C) 4/23
D) i am not in a diet, i go for Chocolate all the way :)
A) 3/30 like neither flavor
ReplyDeleteB)4/30 ONLY chocolate
C)4/23? loves chocolate given he loves strawberry. Well, I guess it's right since now that I see it, the person above me put the same thing and she's waaaaaaayyyyyyy smart =)
D) Chocolate for me I want something good.
A) 3/30
ReplyDeleteB) 4/30
C) 4/23
D) Chocolate
Good job Lilian ;-)
a)3
ReplyDeleteb)4/30
c)4/23
d)chocolate
1)3/30
ReplyDelete2)4/30
3)4/23
4) Strawberry =]