The Binomial Distribution Worksheet Page 3
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1
2
3
4
5
6��
The coefficients represent the number of ways that we may have x successes in n trials = (
).
��
4
4
4
4
4
(
) = 1, (
) = 4, (
) = 6, (
) = 4. (
) = 1.
Indeed, if n = 4, then
0
1
2
3
4
4
��
4−��
�� ( �� ) = (
) (0.2)
(0.8)
, x = 0, 1, 2, 3, 4
��
3. From TI-83: mean = µ = 0.8, standard deviation = σ = 0.8
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