ordinary resolution for many students‚ more and more students do so every day‚ mimicking the action of their peers. Unfortunately‚ the eighty-five percent of students who cheat would prefer a higher score than the chance to grow as a learner. All of the cheating boils down to one simple concept: college acceptances. To begin‚ students cheat in order to get accepted to the college of their choice. As Kolker explains‚ students believe that‚ “College‚ more than ever‚ determines success.” As a high school
Free High school College Carnegie Mellon University
Cyber Stalking Stalking: series of actions that would cause a person to fear death or injury Spam (Bulk email marketing) Internet version of junk mail Where do they get email addys? - legitimate companies - Newsgroup Extractors - Websites Extractors Avoiding Spam - Use phoney address - Use anonymous remailer - Use “AT” in your email address instead of @. Internet Fraud / Identity Theft Credit Card Fraud: The unauthorized use of credit cards to obtain money or property Common ways
Premium E-mail Domain Name System Internet
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
Premium Sample size Normal distribution Standard deviation
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
Premium Management
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
Premium Regression analysis Statistical inference
Notes Intention – SOCIAL OR DOMESTIC- do not intend to create legal relations. Balfour v Balfour (1912) Categories of rebuttal – The nature of the document (if drafted by solicitor) - Agreement may expressly state legal relations - Surrounding Circumstance may indicate intention Merritt v Merritt (1970) -Significant reliance on promise- consequences are sufficiently serious. Wakeling v Ripley (1951) - COMMERCIAL NATURE- do intend to create legal relations. Edwards v Skyways (1964)
Premium Contract Contract law
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:
Premium Statistical hypothesis testing Normal distribution Statistics
What proportion of a normal distribution is located in the tail beyond z = +2.00? 0.0228 What proportion of a normal distribution is located between the mean and z = 1.40? 0.4192 The Z-score corresponding to the 52nd percentile is .05 A normally distributed variable has a mean of 10 and a standard deviation of 2. The probability that a value between 7 and 9 is obtained is .2417 An accelerated life test on a large number of type-D alkaline batteries revealed that the mean life for a particular use
Premium Statistical hypothesis testing Arithmetic mean Normal distribution
A subordinating conjunction is a joining word that connects two clauses. (A clause is a word group containing a subject and a verb.) How are subordinating conjunctions different from other conjunctions? Other conjunctions join words‚ phrases or clauses of equal value. (Because‚ who‚ when‚ after‚ although‚ as‚ as if‚ as long as‚ before‚ even if/ though‚ if‚ if only‚ In order that‚ now that‚ once‚ provided‚ rather than‚ since‚ so that‚ than‚ though‚ that‚ till‚ unless‚ until‚ when‚ whenever‚ where
Free Dependent clause Sentence Syntactic entities
The Sicilian Mafia‚ or Cosa Nostra is a criminal syndicate that emerged in the mid-nineteenth century in Sicily‚ Italy. It is a loose association of criminal groups that share a common organizational structure and code of conduct. The origins lie in the upheaval of Sicily’s transition out of feudalism in 1812 and its later annexation by mainland Italy in 1860. Under feudalism‚ the nobility owned most of the land and enforced law and order through their private armies. After 1812‚ the feudal barons
Premium Russian Mafia Mafia Organized crime