Hypothesis Testing in Statistics
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Questions and Answers

What does it mean when you reject the null hypothesis?

  • You have gathered sufficient evidence to prove that the null hypothesis is true
  • You have failed to prove that the null hypothesis is correct
  • You have gathered sufficient evidence to prove that the null hypothesis is not true (correct)
  • You have insufficient evidence to warrant the rejection of the null hypothesis

What is the conclusion when you fail to reject the null hypothesis?

  • There is insufficient evidence to warrant the rejection of the null hypothesis (correct)
  • The alternative hypothesis is correct
  • The null hypothesis is always wrong
  • The null hypothesis is correct

What is the purpose of stating the null and alternative hypotheses?

  • To determine the sample size
  • To summarize the key points of the hypothesis testing (correct)
  • To make a conclusion about the population mean
  • To identify the research question

What is the null hypothesis in the example of the fast-food restaurant?

<p>The population mean is 4.5 minutes (B)</p> Signup and view all the answers

What is the alternative hypothesis in the example of the fast-food restaurant?

<p>The population mean is not 4.5 minutes (B)</p> Signup and view all the answers

What is the significance of hypothesis testing in the example of the fast-food restaurant?

<p>To determine if the waiting time has changed from its previous population mean value (D)</p> Signup and view all the answers

What does the symbol H0 represent in hypothesis testing?

<p>The null hypothesis (D)</p> Signup and view all the answers

What is the purpose of hypothesis testing in inferential statistics?

<p>To prove or disprove claims (A)</p> Signup and view all the answers

What is the relationship between the null hypothesis and the alternative hypothesis?

<p>The alternative hypothesis is the reverse of the null hypothesis (C)</p> Signup and view all the answers

What does the confidence coefficient (1- α) represent?

<p>The probability of committing a Type I error (A)</p> Signup and view all the answers

What is the application of statistical hypothesis testing in business mentioned in the text?

<p>Determining if the range of production line is out of control (D)</p> Signup and view all the answers

What is the purpose of studying the lesson on ULOa?

<p>To enable data analysis in business (B)</p> Signup and view all the answers

What is the primary purpose of framing a hypothesis in a research study?

<p>To pair a premise with an opposing hypothesis (C)</p> Signup and view all the answers

What type of hypothesis is a statement that a researcher likes to prove in their experiment or study?

<p>Research hypothesis (C)</p> Signup and view all the answers

What does a null hypothesis typically represent?

<p>The old theory or standard (A)</p> Signup and view all the answers

What is the primary focus of statistical hypotheses?

<p>Characteristics of null and alternative hypotheses (B)</p> Signup and view all the answers

What is the purpose of a substantive hypothesis in a research study?

<p>To reach a conclusion based on data obtained (A)</p> Signup and view all the answers

What is an example of a situation where a null hypothesis is used?

<p>A flour packaging problem (B)</p> Signup and view all the answers

What is the first step of hypothesis testing?

<p>Stating the hypothesis (A)</p> Signup and view all the answers

What is the purpose of setting the level of statistical significance?

<p>To set the threshold for the test (D)</p> Signup and view all the answers

What is the result of getting less than 5% in the testing process?

<p>Accept the null hypothesis (C)</p> Signup and view all the answers

What type of errors can occur in the hypothesis testing process?

<p>Type I and Type II error (C)</p> Signup and view all the answers

What is the null hypothesis in the given example?

<p>Accountancy students are not prepared for online learning (A)</p> Signup and view all the answers

What is the purpose of analyzing the results in hypothesis testing?

<p>To compare the result to the level of significance (C)</p> Signup and view all the answers

What is the consequence of a Type II error in the flour packaging problem?

<p>The packaging procedure is out of control, and the hypothesis testing process does not identify it (B)</p> Signup and view all the answers

What is the purpose of stating the null hypothesis?

<p>To provide a basis for testing the alternative hypothesis (A)</p> Signup and view all the answers

What is the conclusion when the null hypothesis is not rejected?

<p>There is insufficient evidence to warrant the rejection of the null hypothesis (A)</p> Signup and view all the answers

What is the term for the error that occurs when the null hypothesis is not rejected, despite the alternative hypothesis being true?

<p>Type II error (D)</p> Signup and view all the answers

What is the role of the sample information in hypothesis testing?

<p>It provides a basis for making a decision about the null hypothesis (C)</p> Signup and view all the answers

What is the relationship between the null hypothesis and the alternative hypothesis?

<p>The null hypothesis and alternative hypothesis are mutually exclusive (D)</p> Signup and view all the answers

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