For its validity, all hypothesis testing depends heavily on the assumption that the sample that is used was drawn using probabilitysampling techniques.
Why is this important?
What can you do if you just cannot use a probability sampling technique? (For example, suppose there is no good sampling frame available for the population of interest.)
Solution Preview
For its validity, all hypothesis testing depends heavily on the assumption that the sample that is used was drawn using probability sampling techniques. This is important because probability sampling techniques ensures ...
Solution Summary
Discusses validity of hypothesis testing due to probability sampling techniques and discusses alternatives in the absence of probability sampling techniques.
... could arise when a group is being tested with an ...Test of Basic Skills, and the Metropolitan Achievement test. ... the researchers assert that the testing of skills ...
... Degrees of freedom: If these three assumptions are valid, the test statistic will have a t-distribution with (n1 + n2 - 2) = (5 + 5 - 2) = 8 degree of freedom ...
...Testing the Normality Assumption. ... This assumption can be tested in a number of ways ... you can you can apply the Kolmogorov-Smirnov test or the Shapiro-Wilks test. ...
... In hypothesis testing about means of two related populations, the results of one population (or group) effect the ... Two tests can be used to test the for ...
...test for independence both are used for hypothesis testing. ... function for the distribution being tested, Yu is ... Questions The chi-square test can be used to ...
... by step method for the calculation of testing of hypothesis ... Answer The null hypothesis tested is. ... Significance level = 0.05 X −µ The test statistic used is Z ...
... 2. DQ: Nonparametric testing. ... More than two groups of samples can be tested simultaneously. ... The KruskalWallis test does not make assumptions about normality. ...
... and Pearson proposed it to use in hypothesis testing, or in ... (http://www. statisticssolutions.com/methods-chapter/statistical-tests/kruskal-wallis-test/). ...
... (b) State the decision rule and sketch it. (c) Find the sample proportions and z test statistic. ... (g) Is the normality assumption fulfilled? Explain. ...
