For Lesson 17 here are some summary notes, Lesson 17 Summary Notes.

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For Lesson 17 here are some summary notes, Lesson 17 Summary Notes.
Here is the summary page that we wrote at the first of class today with the basic equations for Inferences on the parameters known as the population mean and population proportion. 20160407 summary Lessons 13, 14, 15, 16 Inferences on Mean and Proportion
On Tuesday, April 4, STAT 2023 began to consider Inferences on the Population Mean when the Population Standard Deviation is unknown. The sample standard deviation, S, will be used as an estimator for sigma, the population standard deviation, but when that occurs the test statistic is not Z, but t and the confidence interval form is also based on t, not Z. Here are some details, Class Notes Z test and t test, with CI equations .
How do we know when to reject the null hypothesis and claim the alternative hypothesis is true? Here are some FAQ‘s about the rejection decision that describe some ideas about Rejection Regions and also the Pvalue of hypothesis test. Rejection Region and Pvalue
The summary page developed in class for Lesson 14 is here. OK oil well problem Z test.
Another oil well example with 3 cases and more detail is here, Class Notes . These cases have different numbers that the cases considered in class, but are the same problems. The cases demonstrate the difference between strong evidence, no evidence, and moderate evidence against the null hypothesis and in favor of the alternative.