Introduction to Sampling Distribution
15 Questions
1 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 term used for the methods used to make decisions or draw conclusions about a population?

  • Sample Mean
  • Statistical Inference (correct)
  • Parameter Estimation
  • Hypothesis Testing

    • Which of the following is considered a random variable before the data is collected?

  • Sample Mean
  • Sample Variance
  • Population Parameter
  • Observations (correct)

    • What is the probability distribution of a statistic called?

  • Parameter Estimation
  • Sampling Distribution (correct)
  • Hypothesis Testing
  • Sample Mean

    • What is used to obtain a point estimate of a population parameter?

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

    What method utilizes the information contained in a sample from the population in drawing conclusions?

    <p>Statistical Inference (D)</p> Signup and view all the answers

    Which term refers to the process of making decisions or drawing conclusions about a population using sample data?

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

    What is the estimate for the mean of a single population?

    <p>(x̄) the sample mean (B)</p> Signup and view all the answers

    What is the estimate for the difference in means of two populations?

    <p>(x̅_1 - x̅_2) the difference between the sample means of two independent random samples (D)</p> Signup and view all the answers

    What is meant by the sampling distribution of the mean?

    <p>The probability distribution of (X̅) (D)</p> Signup and view all the answers

    When will the normal approximation be satisfactory for the sampling distribution?

    <p>When n ≥ 30 (A)</p> Signup and view all the answers

    What does the central limit theorem state?

    <p>The sampling distribution of the sample mean will still be approximately normal with mean µ and variance σ^2⁄n, if the sample size n is large (B)</p> Signup and view all the answers

    What is the standard deviation of the sampling distribution of X̅, if σ = 10 and n = 25?

    <p>2.5 (B)</p> Signup and view all the answers

    What does Z=(X̅-μ)/(σ⁄√n) represent?

    <p>Standardization formula for X̅ (B)</p> Signup and view all the answers

    What does (s²) represent?

    <p>Central Limit Theorem expression (A)</p> Signup and view all the answers

    How does Linear functions of independent normally distributed random variables behave?

    <p>Have a normal distribution with mean and variance (D)</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser