ISDS 2000 Chapter : Chapter 9 Outline Updated 0810
15 Mar 2019
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Chapter 9: hypothesis tests: fundamentals of hypothesis testing (9. 1, examples 9. 1: the manager of a fast food restaurant wants to show that the average wait time for orders has changed. It corresponds to the status quo or the current belief in a situation: alternative hypothesis (h1) the opposite of the null hypothesis. 35 grams (2 tbls or 12. 5 cups of popped corn): hypothesis set (decision-making) We can never prove that the null is true, because we have only sample data. : forms of null and alternative. In other words, there is a trade-off between the two possible types of error. If we reduce the possibility of a type i error, we are less likely to reject; if we are less likely to reject, we are more likely not to reject which, by definition, leads to an increase in. Z test of hypothesis for the mean, .
