s_m10_handouts - Rev F08 STA 2023 Module 10 Hypothesis...

Info icon This preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Rev. F08 1 STA 2023 Module 10 Hypothesis Tests for One Population Mean Rev.F08 2 Learning Objectives Upon completing this module, you should be able to: 1. Define the terms associated with hypothesis testing. 2. Choose the null and alternative hypotheses for a hypothesis test. 3. Explain the logic behind hypothesis testing. 4. Identify the test statistic, rejection region, non-rejection region, and critical value(s) for a hypothesis test. 5. Define and apply the concepts of Type I and Type II errors. 6. State and interpret the possible conclusions for a hypothesis test. http://faculty. valenciacc . edu/ashaw/ Click link to download other modules. Rev.F08 3 Learning Objectives (cont.) 7. Obtain the critical value(s) for a specified significance level. 8. Perform a hypothesis test for a population mean when the population standard deviation is known. 9. Obtain the P-value of a hypothesis test. 10. State and apply the steps for performing a hypothesis test, using the critical-value approach to hypothesis testing. 11. State and apply the steps for performing a hypothesis test, using the P-value approach to hypothesis testing. 12. Perform a hypothesis test for a population mean when the population standard deviation is unknown. http://faculty. valenciacc . edu/ashaw/ Click link to download other modules.
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Rev. F08 2 Rev.F08 4 How a Statistic is Used? http://faculty. valenciacc . edu/ashaw/ Click link to download other modules. In the previous module, we looked at methods for obtaining the confidence intervals for one population mean. We have learned that a confidence interval for a population mean , is based on a sample mean (a statistic). In this module, we are going to look at how a statistic (sample mean) is used to make decisions about hypothesized values of a parameter (population mean.) Rev.F08 5 Decision and Hypothesis Test http://faculty. valenciacc . edu/ashaw/ Click link to download other modules. One of the commonly used methods for making decision is to perform a hypothesis test A hypothesis test involves two hypotheses: the null hypothesis and the alternative hypothesis . “Testing a hypothesis” is like “testing a claim.” Rev.F08 6 What are Hypotheses? Hypotheses are working models that we adopt temporarily. Our starting hypothesis is called the null hypothesis . The null hypothesis , that we denote by H 0 , specifies a population model parameter of interest and proposes a value for that parameter . We usually write down the null hypothesis in the form H 0 : parameter = hypothesized value . The alternative hypothesis , which we denote by H A , contains the value of the parameter that we consider plausible when we reject the null hypothesis. http://faculty. valenciacc . edu/ashaw/ Click link to download other modules.
Image of page 2
Rev. F08 3 Rev.F08 7 Testing Hypotheses The first step in defining the null and alternative hypotheses is to determine which parameter is being tested. A parameter describes a population. Examples are the population mean , the population standard deviation and the population proportion .
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.
  • Summer '11
  • Shaw
  • Null hypothesis, Statistical hypothesis testing, • Weiss, Click Link, Neil A., http://faculty.valenciacc. edu/ashaw/

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern