Answer:

Step-by-step explanation:
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Theoretical probability
Heads = 1/2
Tail = 1/2
Expiramental probability
Heads = 11/20
Tails = 9/20
Find the term that goes into both - in this case, it's 2.
Therefore, we divide both numbers by 2 to simplify.
4/2 = 2
6/2 = 3
So the simplified form is 2 : 3
KCF
Keep
Change
Flip
lets say we are dividing 1/2 and 1/4. you would <u>keep</u> 1/2 the same, <u>change</u> the division sign to a multipluction, and<u> flip</u> 1/4 so that it becomes 4/1. you would then just multiply 1/2 and 4/1