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Questions › JNU › JNU SSS 2021 › Q85
1 markStatistics › Hypothesis testing › Tests for means, proportions and variancesEasyabout 1 min

JNU SSS 2021 Question 85: Hypothesis testing

What is the degree of freedom for given test statistic ∣xˉ−yˉ∣(σ1n1+1n2)\dfrac{|\bar{x}-\bar{y}|}{\left(\sigma\sqrt{\frac{1}{n_1}+\frac{1}{n_2}}\right)}(σn1​1​+n2​1​​)∣xˉ−yˉ​∣​ to test the H0H_0H0​ for means.

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What is the degree of freedom for given test statistic (|x̄-ȳ|)/((σ√(1/n₁+1/n₂))) to test the H₀ for means. (A) n₁ + n₂ - 2 (B) n₁ + n₂ - 1 (C) n₁ - 1 (D) n₂ - 2

Also written as: What is the degree of freedom for given test statistic (|x_bar-y_bar|)/((sigmasqrt(1/n_1+1/n_2))) to test the H_0 for means.

Hypothesis testing has come up 47 times in 7 exams since 2007.

What this question tests

This question is on Tests for means, proportions and variances, part of Hypothesis testing in Statistics.

Applying z, t, F and chi-square tests to common problems.

TestStop has 15 past-paper questions on this subtopic.

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