Tuesday, October 31, 2006
The notes we took in class
P= PO/TPO What should happen.
Expermental Probability -What does happen
Destined Result/# of tries in exp 4----- 5/10 50%
1 Figure out theorectical probability
2 Create an expermental chart
3 -Graph, Theorectical, Expermental, On one graph
First scribe might not be good but i didn't have much to go on.
Monday, October 30, 2006
This is the second round of the scribe list. If you have an * beside your name you did not do a scribe during the first round. You may do a scribe any day you want to catch up. You still will be responsible to do a scribe if you are chosen during round 2.
Part of being a scribe is leaving comments. You will be expected to leave comments behind at the sites provided in the Blogs that scribe link in your side bar.
Friday, October 27, 2006
- Answer one of the question Groups in Full as discussed in class.
Find each probability if you spin the spinner once.
1. P ( red) 1/5 there is 5 options and 1 red. 2. P (green) 1/5 there is 5 options and 1 green. 3. P (blue or white) 2/5 there is 1 blue and 1 white and their is 5 options to pick. 4. P (not yellow) 4/5 there is 5 options and yellow doesn't count. 5. P(not red) 4/5 it has to be yellow, blue, green, white but not red so it doesn't count. 6. P(blue or red or yellow) 3/5 it has to be blue, red and yellow but no white and green.
- Question. What do all the questions have in common. What would you need to know about probability to be successful at solving them.
- Answer. All the questions mostly have the same amount example: 1/5 on red and 4 other colors. You would need to know how to do probability to do this question to do the rest of the 1 first.
- Queston. Are there any common errors students might make when answering any of these questions?
- Answer. They might forget to look at the brackets example: ( Not red) some people might read it quickly and they think it says (red) so they would make the mistake.
Question of mine own P ( white) find the Probability
Friday, October 20, 2006
3.P(blue or white)
6.p(blue or red or yellow)
2. I got the denominator on everyone by counting how many colours there are.
I got the numerator by counting how many ways there are to get that colour on the spinner.
3.Whats the probability of getting a gray.
There is no gray on the spinner.
Thursday, October 19, 2006
16)What is the probability of guessing the correct answer to a mulitple choice question if there are 5 choices?
The pobability is 20%.
explanation: You find this answer by taking the number of outcomes which is "1," and then divide it by the total possible outcome, which is "5."
1/5 = 0.2% * 100 = 20%
17) What is the probability of guessing the correct answer to a true and false question?
explanation: There are only two answers which is true and false so "2," is the total possible outcome. And you can only choose "1," answer so "1' is the number of outcomes.
So make it into a fractionand percent.
1/2 = 0.5% * 100 = 20%
18) what is the probability that your birthday will fall on Saturday or Sunday?
explanation: There are 7 dats in a week, so "7" is your total possible outcome. Saturday and Sunday are only 2 so that's your number outcomes. Make it into a fraction and a percent.
2/7 = 0.2857% * 100 = 28.57%
Wednesday, October 18, 2006
Well first how for these questions its a fraction. There is 8 cards in the choices.
7)The probability of getting striped in the choices is P=3/8 or 37.5%
Tuesday, October 17, 2006
n) If you flip a coin 150 times, about how many times would you expect to get heads?
answer: 75 150/2=75
2 is the T.P.O. so getting a heads should have 50%chance.
c) The letters a, e, i, o, u, and y are vowels. If one letter of the alphabet is chosen randomly, what is the probability it is a vowel?
answer: 6/26 or 3/13
k) If you randomlyu pick a date in April, how many equally likely outcomes are there?
There are 30 days in April so the total possible outcome is 30.
p) A magician asked you to pick a card, any card, from a standard deck of 52 cards. What is the probability of picking an ace?
answer: 4/52 or 1/17
There are 4 Ace in the standard deck so the P.O. is 4/52 or 1/13 .
#7 P(striped) First you have to find the total possible outcomes which is 8. There are 3 striped squares so the answer is 3/8
#8 P(white) The total possible outcomes for all of these questions is 8 and there are 4 white so the answer is 4/8 , but reducing it will make it 1/2.
#9 P(shaded) there is 1 shaded box P = 1/8
#10 P(white or shaded) there are 4 white boxes and one shaded P = 5/8
#11 P(striped or white) there are 3 striped and 4 white boxes P = 7/8
#12 P(striped or shaded) there are 3 striped and one shaded box P = 4/8 reducing it will make it 1/2
#13 P(not striped) there are only 3 striped, so 3-8=5 P = 5/8
#14(not white) there are only 4 white so 4-8=4 P = 4/8 reducing it will make it 1/2
#15 P(striped or white or shaded) there are 3 striped 4 white and one shaded that means that the answer is 8/8 reducing it will make it 1/1
19. What is the probability of winning a raffle if 500 tickets are sold and you buy 5 of them?
possible outcome / total possible outcome
5 tickets / 500 all tickets
5/500 divide by 5 is 1/100
20. A class of 25 students has 15 girls and 10 boys. If one student is picked on random, what is the probability it is a girl?
15 girls / 25 students
15/25 divide by 5 is 3/5
21. There are 26 letters in the alphabet. What is the probability that a letter chosen at random is in the word MATHEMATICS?
MATHEMATICS has 11 letters but some of them are doubles.
So there are only 8 different letter in the word.
8 letters in mathematics / 26 letters in the alphabet
8/26 divide by 2 is 4/13
A class of 30 students has 15 girls and 15 boys. If one student is picked on random, what is the probability it is a boy?
15 boys / 30 students
15/30 divide by 15 is 1/2
The objective of the game is to take your bear from the store to their home. To move your bear you use 2 6 sided dice: 1 space - roll 6 or 7 or 8; 2 spaces - roll 4 or 5 or 9 or 10; 3 spaces - 3 or 11; rolling a 2 makes you move 2 spaces and gives you another turn; rolling a 12 makes you move 4 spaces but you will lose your next turn. Also the board has different things that will help you go forward or backwards.
The game should be fair since all players can roll different numbers to help them win.
Thursday, October 05, 2006
Here is a 7 minute screencast that shows you how to set up a Bloglines Account. After you watch it please start to make your own Personal Learning Network. This is the second attempt at making it loud enough. Can you hear me now:-)
You need to create a Bloglines Account. Bloglines is a service that collects all the new posts from blogs that you subscribe too.
At this page please use your email address and a passwork youwill not forget. Change the time to 0600 central time. Now click register. This is the screen you should see.
In your email respond to the bloglines email by clicking on the link.
I would suggest skipping the next page and clicking on
To start your Personal Learning Network I would like you to subscribe to the 4 math classes and the Sargent Park Math Hub. This will keep you up to date when other students create posts that you would like to view and comment on. Commenting on each others work is the most important aspect of blogging.
In the window
paste the following url
Use the following feed to subscribe (click the box in the right corner).
Choose new folder
now click subscribe.
Click add in the upper left hand corner.
Paste the address in the subscribe box then make sure you put this new blog in the following folder
Click subscribe and do the rest of the class sites.
These 5 blogs will be the start to your Personal Learning network. Next stop other sites that will help with your personal learning.
But that is another post!!!
Sunday, October 01, 2006
is the reason why we learn math and need to understand the concepts behind the arithmatic.
Enjoy the show!!
Leave a comment about what you think about this video clip.