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
Question 1 Explain the law of diminishing returns. What are its causes and effects? Question 2 Compare perfect and imperfect markets Question 3 A monopolist with a linea
How does foreign debt management improve development? Borrowing is a policy to encourage growth like aid represents an injection of resources within the economy which enable
In long-term project planning, this is wise to suppose that staff will be accessible for project work for less than 100 per cent of the total accessible time. What factors will dec
solution
Why is World Bank worked jointly with the International Monetary Fund? The WB works jointly along with the IMF to assist LDCs through coordinated: a. Structural Adjustment P
S M Construction has been awarded a contract to build a new manufacturing plant just outside Cardiff. The activity on arrow table below gives data on the activities involved in the
What is mean by stabilization policy? Taming the Business Cycle: To decrease the severity of recessions policy efforts undertaken are termed as stabilization policy. a
Speculating with Long Currency Strangle: A long currency strangle involves buying both a call option and a put option for a particular foreign currency with the same expiratio
Graph the Demand and Supply Curve Given below are the demand schedule and supply schedule for china plates. Graph the demand and supply curve on one graph and determine equili
The Wallpaper Shop, Inc., is a rapidly growing chain of wallpaper shops that caters to the do-it-yourself home remodeling market. During the past year, 15 stores were operated in s
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