Lertap item and test analysis package (Nelson‚ 2000[1])‚ I attempt to respond to modification requests from users as time allows. Early in 2005‚ the director of a large-scale testing program wrote to ask if Lertap might someday build in support for cheat checking‚ that is‚ for detecting the extent to which students in a given test venue may have engaged in answer copying or sharing. The director was familiar with the work of Wesolowsky (2000)‚ and asked if I had seen it. I had not. Detecting
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Chapter 3 Standard units tell you how many standard deviations above or below average a data value is standard units = (actual value – average)/SD actual value = average + (SD x standard units). Standard units are denoted by Z. Chapter 8 Complement rule: P(A) = 1 – P(A doesn ’t happen) Multiplication rule: P(A and B both happen) = P(A) x P(B given A happened) Q. 5 random components removed one at a time from box containing 5 defective and twenty working. What is chance of selecting all defective:
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Agreement- has been a valid offer and that it has been accepted. Manifestation by 2 or more persons to the substance of the contract. Would a reasonable person think an agreement had been entered. Can be shown by conduct. Does not have to be express words “I accept your offer” Offer: 1. Offers must be distinguished from an invitation to treat or request for information. – Intention to make offer- Carlill v Carbolic Smoke Balls Co. (1893) * Display of goods- Invitation to Treat. Pharmaceutical
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Shiana Gunasekera Lecture 2: GROUPS AND TEAMS *Groups/Teams – same - people with complementary skills‚ to achieve shared purpose and are held mutually responsible. *Formal Teams – officially recognised (organisational chart) and supported by the organisation for specific purposes. *Informal Teams- Natural or spontaneous relationship. No OC *Hierarchy – single person authority/performance responsibility. *Self-managed teams – decisions/complete work on own. Mutually responsible. Perform
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* Biomechanics Of Volleyball is to analyze the efficiency and technique of the students over arm volleyball serve after the use of biomechanical principles has been applied. In order to complete... Premium * Biomechanics In Volleyball my performance‚ of my chosen skill in volleyball‚ using biomechancile pinciples. As stated by Amezdroz et al‚ (2004) "Biomechanics is the study of how living things... Premium * Volleyball Biomechanical Analysis Volleyball Serve Biomechanical factors influencing
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One word essay: HARMONY Confucius once said “Let the states of equilibrium and Harmony exist in perfection‚ and a happy order will prevail throughout heaven and earth‚ and all things will be nourished and flourish.” Harmony is defined as the state of being in agreement or concord. Singapore is a bustling metropolis and a multi-racial society‚ where people of different ethnic groups co-exist and lived harmoniously. Singapore has thrived rapidly because of our openness to international trade flow
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These are methods that work to amplify your message. These are the ways to pass along a message others need to hear. Why settle for a whisper in a corner. If you really want people to come to your site you might just have to yell. I suppose it would be easy to think of this process in the same way you might think of a carnival midway‚ "Step right up and try your luck
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people in it‚ still has nothing to offer young people. I believe Monroe‚ MI has to be one of the lamest towns in the United states. Once you read this essay it really will motivate you to pack your bags‚ grab the kid’s and catch the next flight to where ever your heart desires. Because in Monroe‚MI you have to travel out of town see fun. Thats why I chose this topic. The crime rate in Monroe‚ Mi is increasing daily‚ due to free time they have on their hands. In 2009 there was more than 10‚000 thefts
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90%= 1.645 95% = 1.96 98% = 2.33 99% = 2.575 Hypothesis Testing *A credit card company wondered whether giving frequent flyer miles for every purchase would increase card usage‚ which has a current mean of $2500 per year. They gave free flyer miles to a simple random sample of 25 card customers and found the sample mean to be $2542 and the standard deviation to be $109. n= 25 Ho (Claim) µ=2500 OR Ha µ > 2500 *Use t-table n .50 Ha
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Expectations‚ Variances & Covariances The Rules of Summation n å xi ¼ x1 þ x2 þ Á Á Á þ xn covðX; YÞ ¼ E½ðXÀE½XÞðYÀE½YÞ i¼1 n ¼ å å ½x À EðXÞ½ y À EðYÞ f ðx; yÞ å a ¼ na x y i¼1 n covðX;YÞ r ¼ pffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi varðXÞvarðYÞ n å axi ¼ a å xi i¼1 n i¼1 n n i¼1 i¼1 E(c1X þ c2Y ) ¼ c1E(X ) þ c2E(Y ) E(X þ Y ) ¼ E(X ) þ E(Y ) å ðxi þ yi Þ ¼ å xi þ å yi i¼1 n n n i¼1 i¼1 å ðaxi þ byi Þ ¼ a å xi þ b å yi i¼1 n var(aX þ bY þ cZ ) ¼ a2var(X) þ b2var(Y ) þ c2var(Z
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