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
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NB: when discussing globalisation some sources discuss remote events such as setting up of East India Company. As term ‘developing countries’ is used students should focus on modern post-colonial era – probably shouldn’t go further back than 1960s |Advantages |Disadvantages | |Multinational companies (MNCs) have more opportunities for Foreign |MNCs tend to use cheap labour – many jobs
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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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Practice Question #1: A gambler claims he can predict the roll of a die more often than chance would predict. To test this‚ a die is rolled 100 times and the gambler guesses the number that comes up twenty times and guesses incorrectly the other eighty times. Is this strong evidence that the gambler’s claim is true? a. Specify the null and alternative hypothesis for this problem. p = probability gambler guess correctly for an individual roll null (Ho): p = 1/6 alternative (Ha): p > 1/6 b
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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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ACORN Market segmentation is about understanding the needs of customers & also how they decide between one offer to another. This insight is normally used to form groups of customers who share the same value criteria. Companies are then able to identify which group of customers it’s most likely to suit best & which product meets the needs of its chosen segments. The main objective of segmentation is based on how to win & retain the customers you want to serve. Characteristics are divided into different
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What is Elasticity? - Elasticity refers to the degree of responsiveness in supply or demand in relation to changes in price. If a curve is more elastic‚ then small changes in price will cause large changes in quantity consumed. If a curve is less elastic‚ then it will take large changes in price to effect a change in quantity consumed. Graphically‚ elasticity can be represented by the appearance of the supply or demand curve. A more elastic curve will be horizontal‚ and a less elastic curve will
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Reflection statement. Creating my Vlog was a difficult however rewarding task due to the technological processes involved. I under took many steps to create my Vlog such as learning how to use editing programs and various other software on my computer as well as creating a Youtube account. I found the task of editing quite problematic at first but as I explored the program and went online to research how to use the software I guided my self in the right direction. After going online I quickly
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Self Assessment Doing Business for Humanity This is a guide to what I expected in an answer and the length. If I ask for 2 examples don’t waste time giving more. __________________________________________________________________________________ Q1. Give 2 examples of institutions used to distribute multi lateral aid The World Bank‚ IMF etc Q2. Briefly state what comparing actual amounts of a nation’s Aid giving from per capita amounts reveals. The absolute amount given by the US for example
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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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