LOG PROBLEM
If a representative sample of Wilson showed that 3 out of every 4 students exercise regularly, how many students exercise if there are 618 students total?
"Great Expectations" Book
Page 12 - 3a, 3b, 3c
Page 14 - 5
Page 15 - 6a, 6b, 6c
Page 16 - 8a, 8b
Answers to Wednesday's problems:
1) 324
2)38,880
3)100
4)625,000
5)933,333
6) 4,742,400,000
Today's Problems
1. If 9 out of 10 people surveyed at Wilson like vanilla ice cream, how many people like chocolate ice cream out of 700?
2. If 82 out of 100 people surveyed in Northeast Philadelphia like Pretzel Company, how many people like Pretzel Company out of 200,000?
3. If 19 out of 30 people surveyed in the 7th grade play video games, how many 7th graders play games out of 300?
4. If 7 out of 8 people surveyed in Philadelphia like the pitching of Roy Halladay, how many people like the pitching out of 1.1 million?
5. If 3 out of 8 people surveyed in Philadelphia like the Flyers, how many people like the Flyers out of 1.5 million?
6. If 352 out of 1000 people surveyed in the world use the internet, how many people use a car in the world (World Population 6.4 billion)?
7. If 41 out of 50 people use SEPTA in center city, how many people DO NOT use SEPTA if there are 75,000 people living in center city?
8. If 3 out of 5 students in classes 706 and 707 enjoy using the blog instead of the book, how many students DO NOT prefer the blog if there are 68 students in each class?
9. If 73 out of 100 people root for the Steelers (boo) over the Eagles in Pennsylvania, how many people root for the Eagles in Pennsylvania if the population is 6.4 million?
4/30/10
4/29/10
April 29th, 2010
LOG PROBLEM
8 out of 13 people say they are in favor of the soda tax. If this group is a representative sample, then how many people are in favor of the tax out of 1.5 million?
HOMEWORK PROBLEM
If 2 out of 5 people surveyed in Philadelphia like the Sixers, how many people like the Sixers out of 1.5 million?
8 out of 13 people say they are in favor of the soda tax. If this group is a representative sample, then how many people are in favor of the tax out of 1.5 million?
HOMEWORK PROBLEM
If 2 out of 5 people surveyed in Philadelphia like the Sixers, how many people like the Sixers out of 1.5 million?
4/28/10
April 28th, 2010
LOG PROBLEM
Solve
6!
WORK TODAY
1. If 6 out of 10 people surveyed at Wilson like chocolate ice cream, how many people like chocolate ice cream out of 540?
2. If 72 out of 100 people surveyed in Northeast Philadelphia like Rita’s, how many people like Rita’s out of 54000?
3. If 8 out of 20 people surveyed in the 7th grade play baseball, how many 7th graders play baseball out of 250?
4. If 5 out of 8 people surveyed in Philadelphia like Ryan Howard’s new contract, how many people like the contract out of 1 million?
5. If 7 out of 9 people surveyed in Philadelphia like the Eagles, how many people like the Eagles out of 1.2 million?
6. If 741 out of 1000 people surveyed in the world use a car, how many people use a car in the world (World Population 6.4 billion)?
Solve
6!
WORK TODAY
1. If 6 out of 10 people surveyed at Wilson like chocolate ice cream, how many people like chocolate ice cream out of 540?
2. If 72 out of 100 people surveyed in Northeast Philadelphia like Rita’s, how many people like Rita’s out of 54000?
3. If 8 out of 20 people surveyed in the 7th grade play baseball, how many 7th graders play baseball out of 250?
4. If 5 out of 8 people surveyed in Philadelphia like Ryan Howard’s new contract, how many people like the contract out of 1 million?
5. If 7 out of 9 people surveyed in Philadelphia like the Eagles, how many people like the Eagles out of 1.2 million?
6. If 741 out of 1000 people surveyed in the world use a car, how many people use a car in the world (World Population 6.4 billion)?
4/27/10
April 27th, 2010
LOG PROBLEM
What is the probability of rolling an odd number on a die twice in a row?
HOMEWORK PROBLEM
If 7 out of 10 people surveyed at Wilson like ice cream, how many people like ice cream out of 540?
What is the probability of rolling an odd number on a die twice in a row?
HOMEWORK PROBLEM
If 7 out of 10 people surveyed at Wilson like ice cream, how many people like ice cream out of 540?
4/26/10
April 26th, 2010
ANNOUNCEMENT
Quiz tomorrow on Probability Problems
LOG PROBLEM
If there is a raffle for the class, and each person gets two tickets, what is the probability that you will win the raffle?
Probability Quiz Practice!
1 There are 140 marbles in a bag and 35 of them are green. If
one marble is chosen, what is the probability that it will be
green?
2 A jar contains 5 red, 27 blue, 32 orange, and 49 pink
marbles. A marble is drawn at random. What is the probability that the marble will be pink?
3 A jar contains 48 black, 23 blue, 76 yellow, and 14 green
marbles. A marble is drawn at random. What is the probability that the marble will not be green.
4 A jar contains 19 orange and 25 white marbles. A marble is
drawn at random. What is the probability that the marble will be white.
5 A number from 12 to 20 is drawn at random. What is the probability that the number will have a two in it?
6 You roll a die numbered from 1 to 6.
What is the probability that the number will be an odd number ≥ 2?
7 A number from 55 to 75 is drawn at random.
What is the probability that the number is divisible by 5?
8 What is the probability of flipping a coin “heads” two times in a row?
9 What is the probability of flipping a coin “tails” three times in a row?
10 What is the probability of rolling a die “5” two times in a row?
HOMEWORK
1 There are 140 marbles in a bag and 35 of them are green. If
one marble is chosen, what is the probability that it will be a color other than
green?
2 A jar contains 5 red, 27 blue, 32 orange, and 49 pink
marbles. A marble is drawn at random. What is the probability that the marble will be pink?
3 What is the probability of flipping a coin “heads” four times in a row?
Quiz tomorrow on Probability Problems
LOG PROBLEM
If there is a raffle for the class, and each person gets two tickets, what is the probability that you will win the raffle?
Probability Quiz Practice!
1 There are 140 marbles in a bag and 35 of them are green. If
one marble is chosen, what is the probability that it will be
green?
2 A jar contains 5 red, 27 blue, 32 orange, and 49 pink
marbles. A marble is drawn at random. What is the probability that the marble will be pink?
3 A jar contains 48 black, 23 blue, 76 yellow, and 14 green
marbles. A marble is drawn at random. What is the probability that the marble will not be green.
4 A jar contains 19 orange and 25 white marbles. A marble is
drawn at random. What is the probability that the marble will be white.
5 A number from 12 to 20 is drawn at random. What is the probability that the number will have a two in it?
6 You roll a die numbered from 1 to 6.
What is the probability that the number will be an odd number ≥ 2?
7 A number from 55 to 75 is drawn at random.
What is the probability that the number is divisible by 5?
8 What is the probability of flipping a coin “heads” two times in a row?
9 What is the probability of flipping a coin “tails” three times in a row?
10 What is the probability of rolling a die “5” two times in a row?
HOMEWORK
1 There are 140 marbles in a bag and 35 of them are green. If
one marble is chosen, what is the probability that it will be a color other than
green?
2 A jar contains 5 red, 27 blue, 32 orange, and 49 pink
marbles. A marble is drawn at random. What is the probability that the marble will be pink?
3 What is the probability of flipping a coin “heads” four times in a row?
4/23/10
April 23rd, 2010
LOG PROBLEM
What is the probability of flipping a heads, then a tails, then a heads in that order?
WORK TODAY
Link
http://www.mrmaisonet.com/Menu_Pages/Permutations.html
What is the probability of flipping a heads, then a tails, then a heads in that order?
WORK TODAY
Link
http://www.mrmaisonet.com/Menu_Pages/Permutations.html
4/22/10
April 22nd, 2010
WORK TODAY
We completed Section C in our "Great Expectations" book.
HOMEWORK
Complete the following problem: If 22 people like chocolate out of 40 people, how many people like chocolate out of 600?
We completed Section C in our "Great Expectations" book.
HOMEWORK
Complete the following problem: If 22 people like chocolate out of 40 people, how many people like chocolate out of 600?
4/20/10
April 20th, 2010
1. The probability of selecting a boy 11/22, so P = 0.5.
2.
a) The probability of taking a blue one is 12/30, so P = 0.4
b) The probability of taking a red one is 7/30, so P = 0.23.
c) The probability of taking a gray one is 5/29, so P = 0.17.
3. She should take a candy from bag B, because P (A) = 0.67 < P (B) = 0.78.
4.
a) The probability that the student had a dog is 9/21, so P = 0.43.
b) The probability that the student had at least a cat is 8/20, so P = 0.4.
5. The probability that the student was under twelve was 25/25, so P = 1.
6. The probability of listening to a ballad is 8/12, so P = 0.67.
HOMEWORK
What is the probability of flipping a coin "heads" three times in a row?
2.
a) The probability of taking a blue one is 12/30, so P = 0.4
b) The probability of taking a red one is 7/30, so P = 0.23.
c) The probability of taking a gray one is 5/29, so P = 0.17.
3. She should take a candy from bag B, because P (A) = 0.67 < P (B) = 0.78.
4.
a) The probability that the student had a dog is 9/21, so P = 0.43.
b) The probability that the student had at least a cat is 8/20, so P = 0.4.
5. The probability that the student was under twelve was 25/25, so P = 1.
6. The probability of listening to a ballad is 8/12, so P = 0.67.
HOMEWORK
What is the probability of flipping a coin "heads" three times in a row?
4/19/10
April 19th, 2010
WORK TODAY
1- A student had to be chosen from Ann’s class. There were 11 boys and 11 girls in total
in her class. The teacher wrote their names on separate pieces of paper, and then took
out one of the papers without looking. What is the probability of selecting a boy?
2- Thomas had a bag with 30 marbles: 12 blue, 7 red, 5 white and the rest were gray.
a) He took a marble. What is the probability that it is a blue marble?
b) If he puts the marble back and takes another one, what is the probability of
taking a red one?
c) Thomas took a grey marble and didn’t put it back. What is the probability of
taking another grey marble immediately after that?
HOMEWORK
Do the log problem, except this time calculate the probability of picking a red marble.
3- Julie was given two bags full of goodies. There were 10 chocolate bars and 5 mint
candies in bag A. There were 7 chocolate bars and 2 strawberry mini-pies in bag B.
She wanted to eat a chocolate bar. From which bag should she take the candy (so that
the probability of taking a chocolate bar was greater)?
4- Mike’s class made a project about pets. There were 21 students in his class. Nine had
dogs, five had only cats, three had cats and hamsters and the rest had no pets at all.
They randomly picked out a name.
a) What was the probability that that student had a dog?
b) It turned out the student didn’t have any pets. They randomly picked out a
second name (excluding the first chosen). What was the probability that that
student had at least a cat?
5- Mr. Johnson taught a music class for 25 students under the age of ten. He randomly
chose one of them. What was the probability that the student was under twelve?
6- The compact disk Jane bought had 12 songs. The first four were rock music. Tracks
number 5 through 12 were ballads. She selected the random function in her Compact
Disk Player. What is the probability of first listening to a ballad?
1- A student had to be chosen from Ann’s class. There were 11 boys and 11 girls in total
in her class. The teacher wrote their names on separate pieces of paper, and then took
out one of the papers without looking. What is the probability of selecting a boy?
2- Thomas had a bag with 30 marbles: 12 blue, 7 red, 5 white and the rest were gray.
a) He took a marble. What is the probability that it is a blue marble?
b) If he puts the marble back and takes another one, what is the probability of
taking a red one?
c) Thomas took a grey marble and didn’t put it back. What is the probability of
taking another grey marble immediately after that?
HOMEWORK
Do the log problem, except this time calculate the probability of picking a red marble.
3- Julie was given two bags full of goodies. There were 10 chocolate bars and 5 mint
candies in bag A. There were 7 chocolate bars and 2 strawberry mini-pies in bag B.
She wanted to eat a chocolate bar. From which bag should she take the candy (so that
the probability of taking a chocolate bar was greater)?
4- Mike’s class made a project about pets. There were 21 students in his class. Nine had
dogs, five had only cats, three had cats and hamsters and the rest had no pets at all.
They randomly picked out a name.
a) What was the probability that that student had a dog?
b) It turned out the student didn’t have any pets. They randomly picked out a
second name (excluding the first chosen). What was the probability that that
student had at least a cat?
5- Mr. Johnson taught a music class for 25 students under the age of ten. He randomly
chose one of them. What was the probability that the student was under twelve?
6- The compact disk Jane bought had 12 songs. The first four were rock music. Tracks
number 5 through 12 were ballads. She selected the random function in her Compact
Disk Player. What is the probability of first listening to a ballad?
4/6/10
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