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junior college 2 | H2 Maths
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Alexia Hsu
Alexia Hsu

junior college 2 chevron_right H2 Maths chevron_right Singapore

hallo! could i get help with (iii)? i used the sampling mean concept but i got 0.965 but the answer is 0.960. wanted to check if anybody could try this!

Date Posted: 3 years ago
Views: 355

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Tham KY
Tham Ky's answer
6052 answers (Tutor Details)
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Tham KY
Tham Ky's answer
6052 answers (Tutor Details)
Alexia Hsu
Alexia Hsu
3 years ago
thank you so much! this helps to reaffirm that the answer is wrong
Tham KY
Tham KY
3 years ago
Maybe if you use more significant figure of the probability p, you might get the same value as the answer... Try :)
Alexia Hsu
Alexia Hsu
3 years ago
yup i did that and it didn't work out :( the only time i got 0.960 was when i didn't use sampling mean... it can be derived from using a binom distribution of 240 bombs with p=0.56699 and finding P(X<=149)
Tham KY
Tham KY
3 years ago
If is Binomial 240, then it is not "average bombs per plane"...
Alexia Hsu
Alexia Hsu
3 years ago
ya i agree.. that's why your answer helped to reaffirm that!! :)) thank u ~