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  2. One- and two-tailed tests - Wikipedia

    en.wikipedia.org/wiki/One-_and_two-tailed_tests

    A two-tailed test applied to the normal distribution. A one-tailed test, showing the p-value as the size of one tail. In statistical significance testing, a one-tailed test and a two-tailed test are alternative ways of computing the statistical significance of a parameter inferred from a data set, in terms of a test statistic. A two-tailed test ...

  3. Z-test - Wikipedia

    en.wikipedia.org/wiki/Z-test

    Second, determine the properties of T : one tailed or two tailed. For Null hypothesis H 0: μ≥μ 0 vs alternative hypothesis H 1: μ<μ 0, it is lower/left-tailed (one tailed). For Null hypothesis H 0: μ≤μ 0 vs alternative hypothesis H 1: μ>μ 0, it is upper/right-tailed (one tailed).

  4. Shape of a probability distribution - Wikipedia

    en.wikipedia.org/wiki/Shape_of_a_probability...

    A bimodal distribution would have two high points rather than one. The shape of a distribution is sometimes characterised by the behaviours of the tails (as in a long or short tail). For example, a flat distribution can be said either to have no tails, or to have short tails.

  5. Welch's t-test - Wikipedia

    en.wikipedia.org/wiki/Welch's_t-test

    A two-tailed test, in which the two population means are equal; or A one-tailed test , in which one of the population means is greater than or equal to the other. The approximate degrees of freedom are real numbers ( ν ∈ R + ) {\displaystyle \left(\nu \in \mathbb {R} ^{+}\right)} and used as such in statistics-oriented software, whereas they ...

  6. 18-year-old charged with fatally shooting man during ...

    www.aol.com/18-old-charged-fatally-shooting...

    An 18-year-old was arrested in connection to the fatal shooting of a man last month who was reportedly trying to sell his PlayStation 5. On Nov. 24, officers with the Houston Police Department ...

  7. The Broncos paid Russell Wilson $39 million to leave — now he ...

    www.aol.com/news/broncos-paid-russell-wilson-39...

    "It’s one that I don’t quite understand." Kimes’ colleague Ryan Clark, a former Steelers safety, said right after: “I’m with her. I really don’t know what made the decision to go back ...

  8. Null hypothesis - Wikipedia

    en.wikipedia.org/wiki/Null_hypothesis

    The one-tailed nature of the test resulted from the one-tailed alternate hypothesis (a term not used by Fisher). The null hypothesis became implicitly one-tailed. The logical negation of the Lady's one-tailed claim was also one-tailed. (Claim: Ability > 0; Stated null: Ability = 0; Implicit null: Ability ≤ 0).

  9. Where does the Canadian Pacific Holiday Train stop? See 2024 ...

    www.aol.com/where-does-canadian-pacific-holiday...

    The Canadian Pacific Holiday Train is bringing holiday joy between Nov. 22 to Dec. 17 through US states like New York, Michigan, Illinois and Texas.