Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Sampling and tests of significance are very important tools in business economics. In fact one cannot do any meaningful marketing research without the requisite knowledge of sampling techniques.Any collection (usually large) of individuals or objects is called a population or universe.A finite subset of a population is called a sample. The number of individuals in a sample is called the sample size. 1. Random Sampling: When a sample is taken in such a way that each member of the population has the same probability of being selected, the sample so obtained is called a random sample and the technique is called random sampling. 2. Simple Sampling: It is a special case of random in which each event has the same probability of success and the probability of an event is independent of the success or failure of event in the preceding trails. Thus, simple sampling is a random sampling in which the trails are independent and the probability of success is constant. 3. Large and the small sample: Sample of size n > 30 is called large samples and samples of size n ≤ 30 is called small samples. 4. Hypothesis: In order to make certain decisions about a population on the basis of sample information, some assumption is made about the population. Such assumption, which are not necessarily true, are called statistical hypothesis. 5. Null Hypothesis: The hypothesis tested for possible rejection under the assumption that it is true, is called the null hypothesis. 6. Parameters and Statistics: The Statical constants of the population viz., mean (μ), variance (σ2), etc., are usually referred to as parametrs. The statistical measures computed from the sample observations above, e.g., mean X¯, variance (s2), etc., are called statistics. 7. Level of significance : We are not introducing binomial statement and Normal distribution in this introductory book .The following statements may be taken as given: (i) Normal distribution is the limiting case of the binomial distribution. When n -> α (i.e., the number of trials is indefinitely large) and neither P nor q is very small. (ii) The vitiate Z is defined by
An underwriter guarantees to increase a fixed amount of capital through an initial public offering (IPO).
Any economic models for this title?
What is the main danger in placing countries together in the same grouping? It is useful to classify countries by groupings for identification of common problems and policy pu
Why do markets work into promoting development? Liberal economists dispute a free market economy works since this gives incentives for self-generating growth. Particularly the
Star Petroleum and Moonlight Petroleum are retail petrol stations that compete in the local market to sell petrol to consumers. Star and Moonlight are located across the street fro
(a) Using the basic concept of price elasticity of demand for his product, describe how the producer may raise his total revenue. (b) With reference to an initial set of marke
explain law of production
QUESTION (a) Discuss whether international trade between countries is always beneficial. (b) What are the economic reasons for protectionism? (c) Does the National Income
What factors would you consider while deciding on the frequency along with which you would report progress to (1) senior IS management, and (2) customer management? A main fact
Consider a market for a good where there is a per unit tax set at t cents per unit sold, where the demand curve slopes downward and where supply is perfectly inelastic. Suppose the
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd