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2 Unit 2: Applied Mathematics A

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Question 99

The random variable X X\,X has the distribution X∼B(45,0.16)X \sim B(45, 0.16)X∼B(45,0.16).

a.

State two conditions needed for a binomial model to be appropriate.

[2]
b.

Find P(X<6)P(X < 6)P(X<6).

[1]
c.

Find P(X≥5)P(X \ge 5)P(X≥5).

[2]
d.

Find P(6≤X≤11)P(6 \le X \le 11)P(6≤X≤11).

[1]
Markscheme

2 Unit 2: Applied Mathematics A Questions

  1. A Level
  2. /Maths
  3. /2 Unit 2: Applied Mathematics A

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