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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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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fulfilment of the requirements for the degree of Master of Science © Cranfield University 2003. All rights reserved. No part of this publication may be reproduced without the written permission of the copyright owner. ABSTRACT Cranfield Formula 1 Team is a group design project composed of five students‚ each of them being responsible for the design of one part of the vehicle. The present thesis deals with the front wing design. According to the time allowed to do the thesis and to learn
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Experiment 9 Empirical Formula of Zinc Iodide Objectives Upon completion of this experiment‚ students should have learned: 1. The law of conservation of mass. 2. How to calculate an empirical formula. 3. The concept of limiting reagents. Introduction Synthesis and the determination of empirical formulas are two extremely important parts of chemistry. In this experiment‚ you will synthesize zinc iodide and determine its empirical formula. The molecular formula gives the actual number
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Have you ever wrote a compare and contrast essay or ever read a compare and contrast essay? Well if not in this essay you will you’ll be reading about how The Truman show and The Giver are similar and different and also what the stories are like and a little about characters The Giver is about to have a perfect community and a perfect world. They all have to wear the same thing and look they all can’t be different so they all see black and white cause they can’t see color casue they all look different
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Compare and Contrast This type of writing assignment is common. On a standardized test‚ you may be asked to analyze literature‚ evaluate ideas‚ or make a judgment and explain your reasons. In responding to these types of prompts‚ you often will compare and contrast characters‚ concepts‚ or choices. You will be asked to identify similarities and differences‚ which are the key to compare-and-contrast essays. There are ways to organize your thoughts about compare-and-contrast topics‚ which will
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often talk about the concept of the Ultimate Success Formula. In this model‚ I am adamant about the fact that people can achieve any kind of success that they want. However‚ they will need to learn how to learn from their past‚ and hopefully‚ other peoples’ pasts. The main reason is simple. In learning‚ we develop flexibility and new objections‚ new perspectives and new ways of being. For instance‚ if you know that the present way in doing business isn’t right for you‚ learning something about it will
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