The binomial distribution

The binomial distribution Quiz

Spec 4.1 · Edexcel A-Level Maths: Quiz

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  1. 1. X∼B(6,0.5)X\sim B(6,0.5). Find P(X=2)P(X=2).

    • A. 0.2340.234
    • B. 0.50.5
    • C. 0.01560.0156
    • D. 0.3440.344

  2. 2. X∼B(8,0.3)X\sim B(8,0.3). Which expression equals P(X≥3)P(X\ge3)?

    • A. 1−P(X≤3)1-P(X\le3)
    • B. P(X≤2)P(X\le2)
    • C. 1−P(X≤2)1-P(X\le2)
    • D. 1−P(X≤4)1-P(X\le4)

  3. 3. Which situation is NOT suitable for a binomial model?

    • A. Number of sixes in 20 rolls of a fair die
    • B. Number of heads in 15 tosses of a fair coin
    • C. Number of red cards in 5 cards dealt from a pack without replacement
    • D. Number of correct guesses in 12 independent questions

  4. 4. X∼B(10,0.2)X\sim B(10,0.2). Find the probability of at least one success.

    • A. 0.1070.107
    • B. 0.20.2
    • C. 0.80.8
    • D. 0.8930.893

  5. 5. P(X≤4)=0.8P(X\le4)=0.8 and P(X≤5)=0.9P(X\le5)=0.9 for a binomial XX. Find P(X=5)P(X=5).

    • A. 0.90.9
    • B. 0.80.8
    • C. 0.720.72
    • D. 0.10.1

Quiz