Mathematics
Grade 12
45 min
Identify independent events
Tutorial Preview
1
Given P(A)=0.5, P(B)=0.2, and P(A and B)=0.1, are events A and B independent?
2
You roll a fair die, then flip a fair coin. Is rolling a 4 independent of flipping a Heads?
3
A bag has 2 red and 3 blue marbles. You draw one, don't replace it, then draw a second. Are the draws independent?
Sample Practice Questions
Easy
Given P(X)=0.6, P(Y)=0.5, and P(X and Y)=0.3. Are events X and Y independent?
0.Yes
1.No
2.Maybe
3.N/A
Easy
You spin a spinner, then roll a die. Are the outcomes of the spinner and the die independent?
0.Yes
1.No
2.Only if 6
3.Always
Easy
You pick a card from a deck and don't replace it. You pick another. Are the two picks independent?
0.Yes
1.No
2.Sometimes
3.Always
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