3 public questions tagged with this topic.
Let's break it down: solving fully: apply relevant formula, put numbers, compute. Result comes as binomial distribution. Easy verification shows it satisfies condition.
Ref: NCERT Mathematics Class XI and XII
Look at it this way: np=8, npq=4 gives q=0.5, p=0.5, n=16. Then P(X=1)=16C1(0.5)^16=16/65536=1/4096. Complete.
Ref: NCERT Mathematics Class XII — Probability
We know that np=2, npq=1, so q=0.5, p=0.5, n=4. P(Y≥1)=1-P₀=1-(0.5)⁴=1-1/16=15/16. Full binomial calculation.
Ref: NCERT Mathematics Class XII — Probability
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