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Recent content by remz

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    Mechanics Paper 4 Guess Paper

    Does anybody have mechanics A Level math paper 4 guess paper? Thanks in advance and best of luck for tomorrow!
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    Stats guess paper

    Finding mean using incomplete data (as well as Standard Deviation) Normal Distribution question A really hard Perms and Combs question A Histogram question Probability distribution involving without replacement
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    Stats 1 Preparation

    You do C.C in a normal distribution when you convert a binomial distribution question into normal distribution
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    guesses about tomorw's paper stats???????

    I am thinking its going to be really hard. 62 takers bewareee!!
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    STATS question!

    We are using approximation here because you will convert this binomial distribution into normal distribution. So when that happens, we apply contunity correction and hence approximation.
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    Stats 1 Preparation

    Its like within one standard deviation, 68% of the values are within this range or 0.68. Within two standard deviations, its 95% of the date (values) or 0.95 and then within three SD its 99.99% or 0.99
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    Stats 1 Preparation

    yup!
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    Stats 1 Preparation

    Interquartile its is 0.75 (75%) while for others i have already listed Remember the 68-95-99.99% rule
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    Stats 1 Preparation

    I think he means Normal distribution probabilities. Its 68% - 95 % - 99.9% regarding mean + 1.S.D, Mean +2 S.D, Mean + 3 S.D respectively
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    Maths S1 M/J10 Solve please

    P is permutation where arrangement is important (ordering is important). Usually found when you are placing people in a row or whichever situation requires order However combination (C) is where arrangement is NOT important and usual events involving it are people being selected in a group, etc.
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    Stats 1 Preparation

    I know seriously. Perms and Combs could make or break the whole paper
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    conditions for binomial and normal dist

    Posted here viewtopic.php?f=26&t=8529&start=10#p88579
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    Stats 1 Preparation

    Points are not for normal distribution. They are for Binomial Distribution actually These are the following points: 1) A finite number , n, trials to be carried out 2) The Trials are independent 3) The outcome of each trial is deemed either a success or a failure 4) The probability, p, of a...
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    Stats 1 Preparation

    (0.3)^9 + (0.7)^9 is taken because in other words it is 9C9 x (0.7)^0 x (0.3)^9 and (0.7)^9 is 9C0 x(0.3)^0x(0.7)^9 so you see 9C9 x (0.7)^0 = 1 and 9C0 x(0.3)^0 = 1. thats why the full form is not written in the marking scheme. And both the parts were added as the word "or" was used in the...
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    MODULUS IN S1

    Nope modulus is not part of the syllabus except for in normal distribution equation. However logs is part of the syllabus ( telling all the non p3 folks out there)
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