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
Dynamics Test Review Dynamics: The study of forces that cause motion Types of Forces: can accelerate‚ deform‚ rotate measured in Newtons (N). Force of Gravity: force of attraction between all matter Force of Friction: force that resists relative motion of two surfaes. Always parallel to surface in contact Normal force: force of contact that exists between two surfaces Applied Force: the push or pull Tension Force: the force of a rope or a chain (can only pull) Air resistance: caused by a
Free Force Mass Classical mechanics
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
Premium Regression analysis Statistics Normal distribution
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
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
Premium Mind Learning Writing
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
Premium Africa Government Sovereign state
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
It has been thought that girls are more mature than boys. Parents‚ teachers and many others agree to this statement. When they are young‚ it is known that girls mature faster than boys. This seems to always be the case as their lives goes on. Imagine a teacher trying to teach and there is a group of boys in the back fooling around and in the front are perfectly behaved girls. The teacher favors the girls for behaving correctly and scolds the boys in the back. She becomes annoyed when the boys won’t
Free Education Teacher History of education
Group 1 s Weave hand in an s shape‚ like a snake‚ and say ssssss. a Wiggle fingers above elbow as if ants crawling on you‚ saying a‚ a‚ a. t Turn head from side to side as if watching tennis and say t‚ t‚ t‚ t. i Pretend to be a mouse by wriggling fingers at end of noise and squeak i‚ i‚ i‚ i. p Pretend to puff out candles and say p‚ p‚ p. n Hold arms out at side‚ as if a plane‚ and say nnnnnnnnnn.! © Jolly Learning Ltd www.jollylearning.co.uk 2011 Group
Premium Trigraph Finger
WEEK 1 GEN Adverse reactions for drugs occur because: No drug has only one receptor it binds to. A drug that occupies and "turns on" a receptor is an: agonist Before marketing a new drug‚ the drug company asks the FDA to approve its choice of: trade name The time between when a drug response is observable and when there is no longer an observable drug effect is called the duration of action This term refers to how much of a drug must be given to see a desired response potency
Premium Pharmacology Hypertension Myocardial infarction