When questions are focused on finding an unknown population variance or standard deviation, then the chi-squared statistic is used. This question and solution includes a hypothesis test and an estimation as well as how to read the chi-squared table.
These sample quizzes are great for practicing Chapter 1-4 questions.
The CASE 2 z-test of proportion can check to see if the proportion of individuals who fit in a specific category is larger by a defined amount in one population than it is in another population, or if it's smaller by a defined amount in one population than it is in another population, or if it's different by a defined amount in one population than it is in another population.
One more exam-style question before we get to the Binomial section of Chapter 7. This solution requires the use of the probability tree to find the probability distribution of x.
While Chapter 8 is characterized as handling individual outcomes of continuous variables, the use of proportions can confuse things. I solve a question here that focuses on both individuals and proportions of populations in order to explain how they work.
Here you will find my package of past final exam questions – with their full solutions – customized to cover ALL the main sections of the chapters on your upcoming exam.
Chapter 16 contains a lot of new information, and is focused on heavily in the upcoming final. Understanding this chapter is crucial for a good mark!