Hypothesis Testing 101
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Questions and Answers

What is a statistical hypothesis?

  • A theory about a single population
  • A proven fact about multiple populations
  • An assertion about one or more populations (correct)
  • A guess about a single population
  • True or false:Hypothesis testing is used to test the validity of theories.

    False (B)

    What is the null hypothesis?

  • The investigator's belief
  • The commonly accepted fact (correct)
  • An operational statement of a theory
  • A proven fact
  • True or false: The alternative hypothesis is the commonly accepted fact.

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

    What is the alternative hypothesis?

    <p>The operational statement of a theory (B)</p> Signup and view all the answers

    True or false: The steps to perform hypothesis testing include problem identification, stating the null and alternative hypotheses, choosing the level of significance, and collecting data.

    <p>False (B)</p> Signup and view all the answers

    What are the steps involved in hypothesis testing?

    <p>Stating the null and alternative hypotheses, choosing the level of significance, selecting the appropriate test statistic and establishing the critical region, collecting data, making a decision, and drawing conclusions about the population (D)</p> Signup and view all the answers

    True or false: The probability of obtaining results by chance is used to determine whether the null hypothesis can be accepted.

    <p>False (B)</p> Signup and view all the answers

    How is the probability of obtaining results by chance used in hypothesis testing?

    <p>To determine whether the null hypothesis can be rejected (D)</p> Signup and view all the answers

    True or false: The binomial distribution can be used to compute the probability of obtaining a certain number of correct guesses.

    <p>True (B)</p> Signup and view all the answers

    What is the binomial distribution used for in hypothesis testing?

    <p>To compute the probability of obtaining a certain number of correct guesses (C)</p> Signup and view all the answers

    True or false: The story of Harry Potter and wands is used as an example to illustrate hypothesis testing.

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

    What do researchers work to do in regards to the null hypothesis?

    <p>Disprove it (B)</p> Signup and view all the answers

    True or false: A hypothesis should not be testable by experiment or observation.

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

    Study Notes

    • Hypothesis testing is used to test the validity of survey or experiment results.
    • A statistical hypothesis is an assertion or conjecture about one or more populations.
    • The null hypothesis is the commonly accepted fact, while the alternative hypothesis is the operational statement of the theory that the investigator believes to be true and wishes to prove.
    • To perform hypothesis testing, one must follow several steps, including problem identification, stating the null and alternative hypotheses, choosing the level of significance, selecting the appropriate test statistic and establishing the critical region, collecting data, making a decision, and drawing conclusions about the population.
    • The probability of obtaining results by chance is used to determine whether the null hypothesis can be rejected.
    • The binomial distribution can be used to compute the probability of obtaining a certain number of correct guesses.
    • The story of James Bond and martinis is used as an example to illustrate hypothesis testing.
    • A hypothesis should be testable by experiment or observation.
    • Hypothesis testing can be confusing for students, but following the steps can make it easier.
    • Researchers work to reject, nullify, or disprove the null hypothesis.

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    Description

    Think you understand the basics of hypothesis testing? Test your knowledge with this quiz! From identifying the problem and stating hypotheses to choosing a level of significance and making a decision, this quiz covers all the essential steps of hypothesis testing. Whether you're a student or a researcher, this quiz is a great way to test your understanding and improve your skills. So grab a martini (shaken, not stirred) and get ready to put your hypothesis testing knowledge to the test!

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