Transcript P( number greater than 5)

Chapter 4
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Percents
Probability
Proportions
Conversions
Probs with
Percents
Wild Card
100
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200
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300
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400
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500
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500
Find 44% of 600.
A 100
264
A 100
What percent of 60 is 6?
A 200
10%
A 200
2 is what percent of 12?
A 300
16.7%
A 300
32 is 70% of what number?
A 400
45.7
A 400
25% of what number is 10
A 500
40
A 500
You roll a number cube.
Find P( number greater than 5)
B 100
1/6
B 100
Find the P(even greater than 3)
when rolling a number cube.
B 200
1/3
B 200
In a batch of 850 calculators, 15 were found
to be defective. What is the probability that a
calculator chosen at random will be defective?
Write the probability as a percent, rounding to
the nearest tenth.
B 300
15/850 = 1.8%
B 300
Suppose you choose a marble from a bag
containing 3 red marbles, 6 white marbles,
and 1 blue marble. You return the first
marble to the bag and then choose again.
Find P(red and blue).
B 400
3/100
B 400
You have seven $1 bills, two $5 bills, and
three $10 bills in your wallet. You select a
bill at random. Without replacing the bill,
you choose a second bill at random. Find
P($10 then $1).
B 500
7/44
B 500
Solve.
2 8

9 x

C 100
x  36
C 100
Solve.
x4 4

3
6

C 200
x=6
C 200
A van travels 120 miles on 5
gallons of gas. Find how
many gallons the van needs to
travel 600 miles.
C 300
25 gallons
C 300
DAILY
Place A Wager
DOUBLE
C 400
The pair of figures is similar. Find x.
12
x
5
3
C 400
36/5 = 7 1/5
C 400
Human hair grows at a rte of about
0.33 mm per day. How much does it
grow in 60 days?
C 500
19.8 mm
C 500
Write the conversion factor for
seconds to minutes. Use the factor
to convert 225 seconds to minutes.
D 100
3.75 minutes
D 100
A 16 oz bottle of water costs $1.32.
What is the cost per ounce?
D 200
$0.0825 per oz
D 200
A boy makes 50 cents per day on
his paper route. How much money
will he make in a year?
D 300
$182.50 per year
D 300
A scale of a blue-print is 1in
to 4 ft. What are the actual
dimensions of the bathroom
which is 2in by 4in?
D 400
8ft by 16ft
D 400
Scale: 1in to 4ft
Blueprint dimensions: 2in by 4in
What is the actual area of the bathroom?
D 500
128 ft2
D 500
A cell phone company orders 300 new
phones from a manufacturer. If the
probability fo a phone being defective
is 1.8%, predict how many of the
phones are likely to be defective.
Round to the nearest whole number.
E 100
5
E 100
The art teachers at school planned to take
250 students on a field trip to an art
museum. One teacher found that 5 of her
25 students could identify a painting by
DaVinci before the field trip. What is the
experimental probability that a student in
the teacher’s class could identify a
DaVinci painting. Write it as a percent
rounded to the nearest tenth.
E 200
1/5 = 20%
E 200
Based on the P(students identifying
the Da Vinci) = 20% from the
previous question, how many of the
250 students would be able to
identify the Da Vinci?
E 300
50
E 300
Is this event independent or
dependent? Explain.
Toss a nickle and then toss a dime.
E 400
Independent
E 400
Are the two events dependent
or independent? Explain.
Pick a marble from a bowl of
marbles. Keep the marble
and pick another.
E 500
Dependent
E 500
Who is Ms. Cowan’s favorite team?
F 100
Alabama Crimson Tide
F 100
What is the best cheer ever?
F 200
ROLL TIDE!
F 200
The probability of the complement of an
event is always less than the probability of
the event itself; true or false?
F 300
false
F 300
If A and B are independent
events and P(A) and P(B) are
both greater than 1/2, then
P(A and B) is never greater
than 1; true or false?
F 400
true
F 400
The cross products of a
proportion are never equal;
true or false?
F 500
false
F 500
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