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junior college 2 | H2 Maths
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Date Posted: 3 years ago
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for the probability, easier to calculate as ...
no. of ways of selecting x red counters and (4-x) blue counters, divide by total ways of selecting 4 counters
for the expectation, by definition ...
expectation of X = sum of all [ x multiply P(X=x) ]
no. of ways of selecting x red counters and (4-x) blue counters, divide by total ways of selecting 4 counters
for the expectation, by definition ...
expectation of X = sum of all [ x multiply P(X=x) ]
Date Posted:
3 years ago
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