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junior college 1 | H1 Maths
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junior college 1 chevron_right H1 Maths chevron_right Singapore

How do I do (ii) and (iii)?

Thanks in advanced.

The answer for (ii) is 0.924 and (iii) is 0.0597.

Date Posted: 5 months ago
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Jia Earn Lim
Jia Earn Lim's answer
96 answers (Tutor Details)
Hello I hope this working is understandable :) I essentially formed a random variable denoting the required comparison between the uphill and running track lap time and use normal distribution to find the answer. For part ii as we’re given a fixed 40 trials, I used binomial distribution to find the probability.