S6 APPLIED MATHS SEMINAR QUESTIONS pdf || A level

QUESTION

Factory has a machine shop in which three machines A, B and C
produce 100cm aluminum tubes. An inspector is equally likely to
sample tubes from A and B, and three times likely to select tubes from
C as he is from B. The defective rates from the machines are 10%, 10%
and 20% respectively.
What is the probability that the tube selected by the inspector is;
i) From A
ii) Defective
iii) B given that it is defective.

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QUESTION

Factory has a machine shop in which three machines A, B and C
produce 100cm aluminum tubes. An inspector is equally likely to
sample tubes from A and B, and three times likely to select tubes from
C as he is from B. The defective rates from the machines are 10%, 10%
and 20% respectively.
What is the probability that the tube selected by the inspector is;

S6 APPLIED MATHS SEMINAR QUESTIONS pdf || A level ( Preview )