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  1. Null hypothesis - Wikipedia

    • Автор: Contributors to Wikimedia Projects
    • Дата публікації: 5/14/2003
    • In inferential statistics, the null hypothesis is a general statement or default position that there is no relationship between two measured phenomena, or no association among groups. Testing the null hypothesis—and thus concluding that there are or are not grounds for believing that there is a relationship between two phenomena —is a central task in the modern practice of science; the field of statistics gives precise criteria for rejecting a null hypothesis. The null hypothesis is...
    See more on en.wikipedia.org · Text under CC-BY-SA license
  2. Null Hypothesis - Investopedia


    11/27/2018 · The null hypothesis is the initial statistical claim that the population mean is equivalent to the claimed. For example, assume the average time to cook a specific brand of pasta is 12 minutes.

    • Тривалість відео: 2 хв.
    • What is a “Null Hypothesis” in Statistics? - Official Site


      You are here: Home Basics Must-Know Statistics Null Hypothesis Simple Introduction A null hypothesis is a precise statement about a population that we try to reject with sample data. ... It almost contains a zero correlation, exactly the null hypothesis we rejected earlier.

    • Riemann hypothesis - Wikipedia

      • In mathematics, the Riemann hypothesis is a conjecture that the Riemann zeta function has its zeros only at the negative even integers and complex numbers with real part 1/2. It was proposed by Bernhard Riemann (1859), after whom it is named. The name is also used for some closely related analogues, such as the Riemann hypothesis for curves over finite fields. The Riemann hypothesis implies results about the distribution of prime numbers. Along with suitable generalizations, some mathematicians
      See more on en.wikipedia.org · Text under CC-BY-SA license
    • Null Hypothesis - The Commonly Accepted Hypothesis


      The null hypothesis (H 0) is a hypothesis which the researcher tries to disprove, reject or nullify. The 'null' often refers to the common view of something, while the alternative hypothesis is what the researcher really thinks is the cause of a phenomenon.

    • Null Hypothesis: Definition and Examples - ThoughtCo


      A hypothesis is a prediction based on observations. The null hypothesis predicts no difference from an experimental variable or between two populations.

    • Hypothesis Testing for Zero Correlation | ExamSolutions ...


      10/22/2018 · In this video I show you how to do hypothesis testing for zero correlation from a population by taking a sample of observations from the population calculating the product moment correlation ...

      • Автор: ExamSolutions
      • Переглядів: 1.2 тис.
    • Null Hypothesis and Alternative Hypothesis - ThoughtCo


      The null hypothesis for an experiment to investigate this is “The mean adult body temperature for healthy individuals is 98.6 degrees Fahrenheit.” If we fail to reject the null hypothesis, then our working hypothesis remains that the average adult who is healthy has a temperature of 98.6 degrees. We do not prove that this is true.

    • Hypothesis testing and p-values (video) | Khan Academy


      3/15/2016 · Sal walks through an example about a neurologist testing the effect of a drug to discuss hypothesis testing and p-values. Sal walks through an example about a neurologist testing the effect of a drug to discuss hypothesis …

      • Автор: Sal Khan
      • Переглядів: 1.8 млн
    • Introduction to Hypothesis Testing

      https://www3.nd.edu/~rwilliam/stats1/x24.pdf · Файл PDF

      The hypothesis actually to be tested is usually given the symbol H0, and is commonly referred to as the null hypothesis. As is explained more below, the null hypothesis is ... Introduction to Hypothesis Testing - Page 5 . P(Za) =i.e. F(a) = 1 -for a one-tailed alternative that involves a > sign. Note that a is a positive number. H0 ...