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Semester 1 Interim STA

Total questions: 30

Worksheet time: 3hrs 14mins

Name
Class
Date
1.
About 13 out of 20 homes have a personal computer.  On a street with 60 homes, how many would you expect to have a personal computer?
a)
7 homes
b)
39 homes
c)
73 homes 
d)
40 homes
2.

The waiting time to ride a roller coaster is 20 minutes when 150 people are in line. How long is the waiting time when 1,200 people are in line?

a)

120 min

b)

140 min

c)

160 min

d)

180 min

3.

Kyleigh saw 10 blue, 8 red, and 42 white cars drive by her house in 1 hour. What is the experimental probability that the next car the drives by her house will not be a white car?

a)

.5

b)

.6

c)

.3

d)

.7

4.

A restaurant surveys customers with the following results: 8 pizzas, 12 hamburgers, 14 pastas, and 6 steaks. What is the experimental probability of pizza or steak?

P(pizza or steak)

a)

20%

b)

65%

c)

50%

d)

35%

5.
Experimental Probability is:
a)
What Will happen 
b)
What actually happens
c)
What should happen
d)
What I think Happens
6.

Jason rolls a die 14 times.. What is the Experimental probability that he will roll a 1 or 6?

a)

1/3

b)

1/4

c)

3/7

d)

1/8

7.
Find the experimental probability:
Roll dice:  1, 3, 3, 4, 4
P(1) = 
a)
3/5
b)
1/6
c)
2/5
d)
1/5
8.

A dice is rolled 50 times. It lands on six 37 times. What is the experimental probability of the dice landing on six?

a)

3750\frac{37}{50}

b)

1350\frac{13}{50}

c)

3787\frac{37}{87}

d)

1337\frac{13}{37}

9.
A bag contains 5 blue marbles, 4 red marbles, and 3 orange marbles. Mrs. Cox picks one without looking, replaces it and picks another one. What is the probability that she picks two that are not orange? 
a)
9/16
b)
3/4
c)
9/144
d)
5/16
10.
Ricardo has the spinner pictured here and a bag of marbles filled with 2 red marbles, 3 green marbles, and 3 blue marbles. What is the probability that Ricardo spins red on the spinner and picks a red marble out of the bag?
a)
1 ⁄ 16
b)
1 ⁄ 2
c)
1 ⁄ 4
d)
1 ⁄ 8
11.
A fruit basket contains
9 apples, 3 bananas, 7 oranges, 5 pears, and 1 grapefruit. Kyle randomly chooses a fruit, does not replace it, then chooses another. What is the probably that he chose two pears? 
a)
9/49
b)
4/125
c)
1/10
d)
1/30
12.

What is the probability that you will get plain crust with ham on your pizza?

a)

1/8

b)

1/2

c)

1/10

d)

2/10

13.

A Tree Diagram is

a)

A written list of all possible outcomes

b)

A description of all possible outcomes

c)

A drawing with branches of all possible outcomes

14.
What is the total cost with sales tax?
Price $17.95
Tax 6%
a)
$19.03
b)
$18.50
c)
$1.08
d)
$2.15
15.
What is the total cost with sales tax?
Price $14.00
Tax 6%
a)
$14.84
b)
$0.84
c)
$15.00
d)
$16.25
16.
You are purchasing a T.V for $990 T.V with 9% sales tax. What is the final price of the T.V.?
a)
$ 1881.00
b)
$ 1079.00
c)
$ 1,079.10
d)
$ 1,709.1
17.
A $10 shirt is on sale for 25% off the price. What is the sale price of the shirt?
a)
$7.50
b)
$2.50
c)
$12.50
d)
$17.50
18.
A video store’s regular price of a video is $25.95, and it’s on sale for 25% off. What is the sale price of the video?
a)
$19.46
b)
$25.75
c)
$6.49
d)
$32.44
19.
How much tax would you pay on a new TV that is $899 at Best Buy, if the tax rate is 6.5%?
a)
$957.44
b)
$840.00
c)
$58.44
d)
$840.57
20.
Sharon makes money by commission rates. She gets 17% of everything she sells. If Sharon sold $37000 worth of items this month, what is her salary for the month?
a)
$14,800
b)
$5,180
c)
$629
d)
$6,290
21.
Amelia sells jewelry.  She make a total of 12% of commission off of her sales.  How much commission Amelia make when she sells $22,540 worth of jewelry.
a)
13,780.80
b)
$450.80
c)
$2,704.80
d)
$304.80
22.
A notebook is on sale for $1.50 with a 20% mark up. What is the sale amount?
a)
$0.30
b)
$4.80
c)
$1.80
23.

During a back-to school sale, a store sold jeans at a 25% discount. If one pair of jeans originally cost $ 35, what was its price during the sale?

a)

$ 17.50

b)

$ 21.75

c)

$ 8.75

d)

$ 26.25

24.

Dinner at the Olive Garden cost $52.37. You leave a 20% tip. What is the total cost?

a)

$72.37

b)

$10.47

c)

$62.84

d)

$41.90

25.

At McDonald’s a McChicken cost $1.49. Meals tax is 5%. What is the total cost?

a)

$1.54

b)

$1.65

c)

$1.56

d)

$1.42

26.

Find the total cost: $20 meal; 7% sales tax; 20% tip (tip before tax)

a)

$ 32.40

b)

$ 47.00

c)

$25.40

d)

$20.90

27.
How much would the tip be if you left 18% on a $75.45 steak dinner?
a)
$ 13.58
b)
$ 89.03
c)
$ 61.87
d)
$135.80
28.

Vicky made some purchases at the Sunflower Market. She bought strawberries for $3.50, carrots for $2.25 and a bouquet of flowers for $9.95. If sales tax is 5%, what will Vicky pay altogether

a)
$16.49
b)
$16.48
c)
$15.70
d)
$16.50
29.
A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue?
a)
5/6
b)
1/2
c)
1/3
d)
1/6
30.
P(not A) = 
*Remember to simplify.*
a)
6/8
b)
3/4
c)
2/8
d)
1/4

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