S2 EDEXCEL REVISION NOTES Binomial Distribution Binomial probability distribution is defined as: * P(X=r) = nCr x pn x (1-p)n-r * Distribution is written as: X~B(n‚p) Conditions include: * Fixed number of trials * All trials are independent of one another * Probability of success remains constant * Each trial much have the same two possible outcomes E(X) = np Var(X) = npq [where q = 1 - p] SD(X) = Var (X) = npq To calculate the probabilities:
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you forget what something means. 3After mid year examinations‚ work on improving your grades. (E.g.: if you get a C in physics(or biology or chemistry) work on getting at least a B; B in maths TRY to work harder for getting an A and so on) Note: English is a language that you can’t study. The only thing you can do is keep on reading stories‚ books‚ magazines‚ newspapers etc... 4Keep it in your head that you need to get grades from A TO C‚ because a D or lower is a fail. 5Keep concentrating in class
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In the poem ‘A Contemplation of Flowers’ written by Henry King and ‘Once Upon A Time’ written by Gabriel Okara‚ both speak of and expresses regret by the persona in the way he had lived his life. Both personas illustrate how they wished that their situation would have been different by expressing their desires in poetic devices such as rhyme‚ alliteration‚ reputation‚ etc‚ etc. In ‘A Contemplation of Flowers‚’ the poet speaks about a man who has an admiration for flowers. The persona is marvelled
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To enable a character to change so much‚ her flaws have to be evident and abundant before the metamorphosis occurs. Priestly obliges in the stage directions offering Sheila as a ‘girl’ showing her immaturity even though she is in her twenties and that she is ‘pleased with life’‚ which is rather damning as we soon realise all she has accomplished is being her father’s daughter and gotten engaged. In giving her such a start in the audience’s eyes‚ we see how trapped Sheila is‚ not only through her
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Physics Moment of a force: Moment of a force = force x perpendicular distance of the line if action if the force from fulcrum Law of moments: When a body is in equilibrium the sum of the clockwise moments about any point equals the sum of the anticlockwise moments about the same point. Centre of mass: Centre of mass is the point where whole mass of the body assumes to be concentrated. II. If the vertical line through the centre of mass is outside the base it will be a topples but if it’s passed
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1. Plant breeders wanted to produce a better variety of tomato by selective breeding. Two plants‚ of the varieties Tangella and Piranto‚ were crossed. (a) Some flowers of each variety were covered with cellophane bags. The diagram shows a covered flower and a brush. (i) Explain why some flowers were covered with cellophane bags during the selective breeding. .......................................................................................................................... ........
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XxxxxxSara FurnessBusiness StudiesIssue 1July 2008 Edexcel Advanced Subsidiary and Advanced GCE in Business Studies First award 2010 July 2008 Edexcel‚ a Pearson company‚ is the UK’s largest awarding body‚ offering academic and vocational qualifications and testing to more than 25‚000 schools‚ colleges‚ employers and other places of learning in the UK and in over 100 countries worldwide. Qualifications include GCSE‚ AS and A Level‚ NVQ and our BTEC suite of vocational qualifications
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Biology 3 Spec: |BIOLOGY UNIT B3 Topic 1 Control systems | |1.1 Be able to demonstrate an understanding that cell metabolism leads to the build-up of waste products in the | |blood‚ including carbon dioxide and urea | |1.2 Know that urea is produced from the breakdown of excess amino acids in the liver and is removed by the | |kidneys
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Allegory An allegory is a symbolism device where the meaning of a greater‚ often abstract‚ concept is conveyed with the aid of a more corporeal object or idea being used as an example. Alliteration Alliteration is a literary device where words are used in quick succession and begin with letters belonging to the same sound group. Whether it is the consonant sound or a specific vowel group‚ the alliteration involves creating a repetition of similar sounds in the sentence. Alliterations are also created
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GCSE Geography Nicholas Rowles Series Editor: Jayne de Courcy PerfectBound An e-book from HarperCollins Publishers 77–85 Fulham Palace Road Hammersmith‚ London W6 8JB First published 2001 © HarperCollinsPublishers Ltd‚ 2001 Nicholas Rowles asserts the moral right to be identified as the author of this work Acrobat eBook Reader edition v 1. April 2001 ISBN: 0-00-712985-8 All rights reserved. You have been granted a non-exclusive‚ nontransferable licence to access and read the text
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