[SPM Add Math Probability Q26 Solution] Hi! How do i solve this?

SPM
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#1

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#2

Hi f5girl, welcome to SKORA.

Below is my answer, let me know if the answers are wrong.

SPM Addmath Probability Q26

  1. Jaya Airlines Company offers 6 flights a week from Kuala Lumpur to Sydney. The probability that a certain flight arrives on time is 0.9 . The company will qualify to receive a monthly ‘Good Service’ award if at least five flights a week arrive on time.

(a) What is the probability that the company will receive the ‘Good Service’ award in a certain month?

(b) The Company will qualify to receive a yearly ‘Efficient Service’ award if the company receives the ‘Good Service’ award 9 times in a year. What is the probability that the company will receive the ‘Efficient Service’ award in a certain
year?

SPM Addmath Probability Q26 Solution

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#3

Hi,question a is correct but the answer given for question b is 0.8501