Independent sample T-test: * unknown variances * expected normal distribution * comparing means * (Als variantie bekend is dan z-test) * Analyse-compare means-independent sample t-test‚ define groups * H0: RateMen=RateWoman (do not differ) * Ha: Ratemen≠RateWoman (RateMen differs from RateWoman) * H0: u1 = u2 vs. HA: u1 ≠ u2 (this is two tailed ) also possible: * H0:uWomen≥ uMen vs. HA: uWomen0 OR d 6000 → Ha: p > 0‚5 of Ha≠0‚5 indien dubbelzijdig wilt
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ADVANCED SUBSIDIARY GENERAL CERTIFICATE OF EDUCATION ADVANCED GENERAL CERTIFICATE OF EDUCATION MATHEMATICS LIST OF FORMULAE AND STATISTICAL TABLES (List MF1) Pure Mathematics Mensuration Surface area of sphere = 4π r2 Area of curved surface of cone = π r × slant height Trigonometry a2 = b2 + c2 − 2bc cos A Arithmetic Series un = a + (n − 1)d Sn = 12 n(a + l) = 12 n{2a + (n − 1)d} Geometric Series un = arn−1 a(1 − rn ) 1−r a S∞ = for | r | < 1 1−r Sn = Summations n ∑ r2 = 16 n(n + 1)(2n
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Although Planck’s formula was accepted to be correct without argue‚ he was not satisfied and he tried to relate his formula with the absolute laws which he loved so much. In order to make sense of his formula he had to kick the second law of thermodynamics out the door and accepted it as a statistical law‚ as it was interpreted by Ludwig Boltzmann. He also had
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ULTRASONIC TESTING (UT) USEFUL FORMULAE 1. Velocity of Ultrasonic Waves in a medium (V) = f x l OR W here f = Number of cycles per second is called frequency. Measured in ‘Hertz’. Abbreviated as ‘Hz’. One Hertz is equivalent to One cycle per second l = Distance covered in one cycle is wavelength V= Velocity of Ultrasonic wave inside the medium in ‘mm/s’ 2. A coustic Impedance (Z) = V x r W here: Z= Acoustic Impedance r= D ensity V= Velocity 3. R eflection Coefficient
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"K-I-S-S" redirects here. For other uses‚ see Kiss (disambiguation). KISS is an acronym for "Keep it simple‚ stupid" as a design principle noted by the U.S. Navy in 1960.[1][2] The KISS principle states that most systems work best if they are kept simple rather than made complex; therefore simplicityshould be a key goal in design and unnecessary complexity should be avoided. The phrase has been associated with aircraft engineer Kelly Johnson (1910–1990).[3] The term "KISS principle" was in popular
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14. If x has the probability distribution f(x) = 12x for x = 1‚2‚3‚…‚ show that E(2X) does not exist. This is famous Petersburg paradox‚ according to which a player’s expectation is infinite (does not exist) if he is to receive 2x dollars when‚ in a series of flips of a balanced coin‚ the first head appears on the xth flip. 17. The manager of a bakery knows that the number of chocolate cakes he can sell on any given day is a random variable having the probability distribution f(x) = 16 for x =
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1) 0.069 mol MgSO4/ 0.015 mol H2O = 4.6 = 5 Formulae for hydrated MgSO4 = MgSO4 5H2O 2) There are at least two reasons why heating to find percentage of water in hydrated crystals is not recommended for all hydrates. The first reason is that some hydrates have such a strong bond with the water that not all of it will be able to be removed. The second reason is that different hydrates have their own mass. Depending on the mass and type of hydrate‚ some of the molecule may be burned off from heating
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The English Radicals‚ by Clement Boulton Roylance Ken analyzes the true struggle that the English radicals faced. Led by Robespierre‚ the radical’s goals were to abolish the French Monarchy. They took part in the National Assembly which was an assembly initiated by individuals that represented the Third Estate. The National assembly formation resulted in the demise of anyone who sided with or was associated with the king and his wife. Overall this book will help in the development of my research
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Radical Innovation # 1: SOCIAL MEDIA 1. What has been the nature of each of these innovations? With Internet on the rise‚ and being widely available and used by everyone‚ especially the new generations‚ there was a need to ‘stay connected ’ as more and more people were travelling‚ and moving away from their home towns. 2. In what way were they radical as opposed to an incremental improvement to an existing product process category? Social Media is a radical innovation rather than an incremental
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Real and Not So Real Retrograde Amnesia Retrograde amnesia (RA) is the impairment in memory retrieval for information acquired normally before the event that caused the amnesia (Cohen 2011). RA varies in its degree and temporal extent while also varying in its aspects of memory impairment. Memory for facts‚ personal events‚ world knowledge‚ skills‚ personality‚ and personal identity are specific aspects of memory that may be affected (Cohen 2011). In the case of Clive Wearing‚ almost all aspects
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