Tests of Hypotheses: z-test and t-test. 0801-HypothesisTests.doc. Page 2 of 4. 2. Select the appropriate test statistic and level of significance. When testing a hypothesis of a proportion , we use the z-statistic or z-test. and the formula.
http://cfcc.edu/faculty/cmoore/0801-HypothesisTests.pdf
This process, called hypothesis testing, consists of four steps. 1  State the hypotheses. This involves stating the null and alternative hypotheses. 2  Formulate an analysis plan. The analysis plan describes how to use sample data to evaluate the null hypothesis. 3  Analyze sample data.
http://stattrek.com/hypothesis-test/hypothesis-testing.aspx
Step 2: State the Alternative Hypothesis. The reason we state the alternative hypothesis this way is that if the Null is rejected, there are many possibilities. For example, \(\mu_1\ne \mu_2 = ⋯ = \mu_k\) is one possibility, as is \(\mu_1=\mu_2\ne\mu_3=⋯=\mu_k\).
https://onlinecourses.science.psu.edu/stat502/node/139
Formulate an analysis plan. The analysis plan describes how to use sample data to accept or reject the null hypothesis. It should specify the following elements. Significance level. Often, researchers choose significance levels equal to 0.01, 0.05, or 0.10; but any value between 0 and 1 can be used. Test method.
http://stattrek.com/hypothesis-test/how-to-test-hypothesis.aspx?Tutorial=AP
1.2 - The 7 Step Process of Statistical Hypothesis Testing. We will cover the seven steps one by one. Step 1: State the Null Hypothesis. The null hypothesis can be thought of as the opposite of the guess the research made (in this example the biologist thinks the plant height will be different for the fertilizers). So the null would be that there will be no difference among the groups of plants.
https://onlinecourses.science.psu.edu/stat502/node/139
Tests of Hypotheses: z-test and t-test. 0801-HypothesisTests.doc. Page 3 of 4. EXAMPLE: The average score of all sixth graders in school District. A on a math aptitude exam is 75 with a standard deviation of 8.1. A. random sample of 100 students in one school was taken. The mean.
http://cfcc.edu/faculty/cmoore/0801-HypothesisTests.pdf
For example, suppose the null hypothesis states that the mean is less than or equal to 10. The alternative hypothesis would be that the mean is greater than 10. The region of rejection would consist of a range of numbers located on the right side of sampling distribution; that is, a set of numbers greater than 10.
http://stattrek.com/hypothesis-test/hypothesis-testing.aspx
A test of a statistical hypothesis, where the region of rejection is on both sides of the sampling distribution, is called a two-tailed test. For example, suppose the null hypothesis states that the mean is equal to 10. The alternative hypothesis would be that the mean is less than 10 or greater than 10.
http://stattrek.com/hypothesis-test/hypothesis-testing.aspx
There are difficulties in a formulaic statement of method, however. Though the scientific method is often presented as a fixed sequence of steps, it represents rather a set of general principles. Not all steps take place in every scientific inquiry (or to the same degree), and are not always in the same order. Some philosophers and scientists have argued that there is no scientific method, such as Lee Smolin and Paul Feyerabend (in his Against Method).
https://en.wikipedia.org/wiki/Scientific_method
The scientific method is a body of techniques for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge. To be termed scientific, a method of inquiry is commonly based on empirical or measurable evidence subject to specific principles of reasoning.
https://en.wikipedia.org/wiki/Scientific_method
how many steps are involved in a hypothesis test?
Four steps are involved in a hypothesis test.