Compound Probability

Quiz by Stephanie Dorman

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12 questions
• Q1
What is the probability when you flip a coin of it landing tails up 3 times in a row?
0
1/4
1/8
1/2
300s
• Q2
What is the probability that you choose a black marble, replace it, then choose a black marble?
2/5
1/25
1/5
1/45
300s
• Q3
What is the probability that you choose a black marble, do NOT replace it, then choose a black marble?
1/45
2/5
1/5
1/25
300s
• Q4
What is the probability that you choose a black marble, do NOT replace it, then choose a black marble do NOT replace it then choose a black marble?
1/45
0
3/10
1/125
300s
• Q5
What is the probability that you choose a stripped marble, replace it, then choose a white marble?
8/45
4/25
2/5
4/5
300s
• Q6
What is the probability that you choose a stripped marble, do NOT replace it, then choose a white marble?
4/5
2/5
4/25
8/45
300s
• Q7
What is the probability that you spin an H and an odd number?
8/49
6/7
8/14
4/7
300s
• Q8
What is the probability that you spin a vowel and a number less than 4?
6/49
5/14
3/7
5/7
300s
• Q9
What is the probability that you spin a letter in the word "MATHEMATICS" and a 6?
5/49
5/14
4/14
4/49
300s
• Q10
You have a bag of skittles containing 5 green, 4 yellow, 6 purple, 3 red, and 2 orange skittles. What is the probability you choose a green skittle, eat it, then choose a purple skittle? #simplify (use a calculator)
3/40
3/38
11/39
11/20
300s
• Q11
There are 3 choices of jellybeans grape, cherry and orange. If the probability of choosing a grape is 3/10 and the probability of choosing a cherry is 1/5, then what is the probability of choosing an orange?
1/5
1/2
4/10
6/10
300s
• Q12
A bag contains 100 marbles, 37 red and 63 purple. Suppose a student without looking chooses a marble out of a bag. They record the color and then put the marble back into the bag. Students recorded 9 red marbles and 11 purple marbles. What is the probability that the next marble they choose is red?
9/100
63/100
37/100
2331/10000
300s

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