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junior college 2 | H2 Maths
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Urgently need help for q5
If possible, q6!!! Thanks :))
Date Posted: 5 years ago
Views: 311
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Correct? Qn6 in next photo...
Date Posted:
5 years ago
Thank you! But the answer for part 2 is 0.682, idk why u divide by 49 and 99, shldnt it be 50&100
Need to use the unbiased est pop variance, see the line before CLT, using formula it is n/(n-1) * sample variance.
So by CLT, divide 100 and 50 respectively, the variance become sample variance divide (n-1).
So by CLT, divide 100 and 50 respectively, the variance become sample variance divide (n-1).
I think thats out of syllabas? Coz didnt learn tat before :0
It is in the formula sheet, with a little change... See another photo I attached...
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Date Posted:
5 years ago
May ik y The last part use binomial CDF instead of normal? And Whats the difference actuallyy
Binomial is for discrete number (integers), eg number of guinea pigs.
Normal Dist is for continuous number (decimals), eg mass. Different uses
Normal Dist is for continuous number (decimals), eg mass. Different uses
Qn asked for "at most 21 [guinea pigs]", so need another distribution for number of guinea pigs...
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Date Posted:
5 years ago
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