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
How does foreign direct investment (FDI) help development? Foreign direct investment (FDI) shows an injection of resources in the economy. When those resources are used to rai
What would course a fall in equilibrium price?
What is meant by the term the triple constraint? What are the three elements of the triple constraint and why is an understanding of their relative weight significant in exercising
Suppose that EBV makes a $6m Series A investment in Newco for 1m shares at $6 per share. One year later, Newco has fallen on hard times, and receives a $6m Series B financing from
what is social cost
how the concept of elasticity used for decision making
How can value management be utilized to compare various possible design solutions? When the bottom-level objectives for a project have been acknowledged through these technique
The economy of Cotai contains 2000 $1 bills. (a) If people hold all money as currency, what is the quantity of money? (b) If people hold all money as demand deposits and bank
different types of firms
Financial engineering deals with the design of new assets. Draw the payoff (at t=1) of the following bull butterfly spread: Purchase 1 call with exercise price a Sell 2 calls
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