Contents
How to do hypothesis testing with one sample?
The sample mean was 4.75 hours with a sample standard deviation of 2.0. Conduct a hypothesis test. The null and alternative hypotheses are: State the Type I and Type II errors in complete sentences given the following statements. The mean number of years Americans work before retiring is 34. At most 60% of Americans vote in presidential elections.
How to determine the significance of a hypothesis?
Select the correct statistical test Choose an appropriate level of significance Formulate a plan for conducting the study Statistical Test– uses the data obtained from a sample to make a decision about whether the null hypothesis should be rejected. Test Value(test statistic) – the numerical value obtained from a statistical test.
How are null and alternative hypotheses stated together?
The null and alternative hypotheses are stated together. T H 0 he following are typical hypothesis for means, where kis a specified number. CH8: Hypothesis Testing Santorico – Page 273
When do you use alternative hypothesis in research?
When a researcher conducts a study, he or she is generally looking for evidence to support a claim of some type of difference. In this case, the claim should be stated as the alternative hypothesis. Because of this, the alternative hypothesis is sometimes called the research hypothesis. CH8: Hypothesis Testing Santorico – Page 276
When to reject a null hypothesis in two tailed test?
Two-tailed test – the null hypothesis should be rejected when the test value is in either of two critical regions on either side of the distribution of the test value. To obtain the critical value, the researcher must choose the significance level, , and know the distribution of the test value.
What does non critical mean in hypothesis testing?
Non-critical or Non-rejection Region– the range of values for the test value that indicates that the difference was probably due to chance and that the null hypothesis should not be rejected. CH8: Hypothesis Testing Santorico – Page 282