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junior college 1 | H1 Maths
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I have answered part (ii) as shown in the image, but the answer provided is 0.655. May I know where have I done incorrectly?
Next, how do I do (iii)?
Help is appreciated. Thanks.
Date Posted: 1 year ago
Views: 1510
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your mistake for (ii) is that you did not square the '2'.
read the explanation in the solution, on when you need to square & when you do not need to square.
and hooray ... in (ii), you remembered to add the variances, instead of subtract (this is commonly overlooked).
please do check for calculation mistakes.
read the explanation in the solution, on when you need to square & when you do not need to square.
and hooray ... in (ii), you remembered to add the variances, instead of subtract (this is commonly overlooked).
please do check for calculation mistakes.
Date Posted:
1 year ago
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