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Discrete random variables — Question 122

Original QCE Vault practice · 1 mark

Q122 · Practice questionTechnology-freeSimple familiar1 mark

QUESTION 122

If

X\sim\operatorname{Bin}(4,0.3)

, then

P(X=0)

is

(A)

0.0081

(B)

0.2401

(C)

0.4116

(D)

0.7000

ABCD

Question linkSyllabus coverage

WORKED SOLUTION

Answer B

1 mark

ANSWER

B

Worked solution

P(X=0)=(0.7)^4=0.2401

.

Selects the correct option.

[1 mark]

Practice question aligned to the current QCAA syllabus; review the worked solution and marking criteria.

View the QCAA syllabus

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