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Probability Review
Test Description: This is designed to review dependent and independent probability in preparation for the 8th grade STAAR test.
Instructions: Answer all questions to get your test result.
1) A jar contains 6 red marbles and 10 blue marbles. If Ms. Grisham were to select 1 marble without replacement, what is the probability of selecting 2 red marbles?
A
1/8
B
3/8
C
3/5
D
9/64
2) At BHI, 50% of the students eat breakfast at school and 10% participate in sports. What is the probability that a selected student eats breakfast at school and participates in sports?
A
1/60
B
1/10
C
1/2
D
1/20
3) Maria has 2 groups of tiles. The 1st group of 26 tiles has all the letters of the alphabet. The 2nd group of 10 tiles is numbered 0 through 9. If she draws 1 letter tile and 1 number tile, what is the probability that she will draw a letter in her
A
7/26
B
1/13
C
5/52
D
1/4
4) What is the probability that Ms. Grisham will let you have free time in SSI tutorials?
A
100% (Obviously I don't know probability...or Ms. Grisham)
B
0% (Not gonna happen...but we gotta pass this test, so it's cool)
C
30% (Maybe she'll be sick one day and we'll have a sub!)
D
1% (I have no idea why I'm choosing this answer...the correct one is pretty obvious)
5) A coin is tossed and a single 6-sided die is rolled. Find the probability of landing on the head side of the coin and rolling a 4 on the die.
A
1/6
B
3/12
C
1/4
D
1/12
6) A bag contains 3 blue and 2 green marbles. You draw 3 marbles from the bag with replacement. What is the probability that all 3 marbles are green?
A
8/27
B
6/27
C
8/125
D
4/25
7) Ima RockStar rolls a die and spins a spinner, with six equally spaced sections, labeled 1 - 6. What is the probability that Ima will roll a number less than 5 and the spinner lands on 2?
A
5/18
B
1/2
C
1/9
D
1/18
8) The weatherman says that Houston has a 40% chance of rain and a 10% chance of flooding this weekend. What is the probability of being in a place where it's raining and flooding this weekend?
A
1/25
B
1/5
C
1/50
D
2/15
9) What are the odds of getting a sum of less than 8 when rolling a pair of dice?
A
1/2
B
4/9
C
1/3
D
5/36
10) My plans for this weekend SHOULD include:
A
Nothing except sleep because that's what I've pretty much done all year...why change now?
B
Logging on to some of the websites that Ms. Grisham sent home so I can practice and PASS
C
Plans??!?! Heeellllloooooooo...I live in the MOMENT, people!
D
Staying up late both nights so I'm SUPER tired Monday morning, which causes me to fall asleep in math tutorials, which then c
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