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Spinner A
Spinner B
red
0.6
Tim has two spinners, spinner A and spinner B
Each spinner can only land on red or blue.
The probability that spinner A will land on red is 0.5
The probability that spinner B will land on red is 0.6
The tree diagram shows this information
Tim spins spinner A once and he
0.5
spins spinner B once.
He does this a number of times,
red
0,4
blue
red
0.6
blue
The number of times both spinners
0.5
land on red is 84
Work out an estimate for the
number of times both spinners land on blue,
0.4
blue
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