Hypotheses Testing and Two-Sample T Test
10 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the appropriate distribution to represent the sampling distribution of differences when both samples are large?

  • F-distribution
  • Chi-square distribution
  • z-distribution (correct)
  • t-distribution
  • In a paired sample t-test, what is used to calculate the test statistic?

  • Pooled standard error
  • Standard deviation of the differences (correct)
  • Pooled variance
  • Sample size
  • What is the null hypothesis typically set as in a paired sample t-test?

  • The means of the two samples are equal (correct)
  • The standard deviations of the two samples are equal
  • The variances of the two samples are equal
  • Both samples are equal
  • What value is compared to the critical t-value to make a decision in hypothesis testing?

    <p>Test statistic</p> Signup and view all the answers

    Which distribution is used when one of the two samples in an independent t-test is small?

    <p>t-distribution</p> Signup and view all the answers

    In a two-sample independent t-test, what assumption is made about the samples?

    <p>The samples are independent of each other</p> Signup and view all the answers

    What does rejecting the null hypothesis in a two-sample t-test indicate?

    <p>There is a significant difference between the sample means</p> Signup and view all the answers

    What parameter is calculated to determine if there is a statistically significant difference between two sample means in an independent t-test?

    <p>?-statistic</p> Signup and view all the answers

    How do you make a decision regarding the null hypothesis in a paired sample t-test?

    <p>Compare test statistic with critical value</p> Signup and view all the answers

    What does a high t-value signify in hypothesis testing?

    <p>Statistically significant difference</p> Signup and view all the answers

    Use Quizgecko on...
    Browser
    Browser