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Applied Statistics MCQ

A subjective judgment as to whether the value of the M1 – M2 observed difference between group means in a study is known as _______ .

Practical Significance

Digital significant

Both a & b

None of these

Answer

Correct Answer: Practical Significance

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Choice of alpha (α) level are data analysts who choose an alpha level; α corresponds to the maximum acceptable risk for Type I error.

True

False

Answer

Correct Answer: True

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P (or p value) is the area in one or two tails of a distribution

True

False

Answer

Correct Answer: True

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The null hypothesis is rejected only for large positive or large negative values of t is known as _______ .

Two-tailed test

Directional Test

Nondirectional Test

ALL of these

Answer

Correct Answer: Directional Test

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One-Tailed Test is a significance test that uses an alternative hypothesis that specifies an alternative value of μ that is ______ either the value of μ .

Less than

Greater than

Both a & b

None of these

Answer

Correct Answer: Both a & b

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A significance test that uses an alternative hypothesis that does not specify a directional difference is known as ________ .

Two-tailed test

One -tailed test

Directional Test

Nondirectional Test

Answer

Correct Answer: Nondirectional Test

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A ______ corresponds to a nondirectional alternative hypothesis .

Two-tailed test

One -tailed test

Single -tailed test

None of these

Answer

Correct Answer: Two-tailed test

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Alternative hypothesis is a difference between two or more variables is anticipated by the researchers .

True

False

Answer

Correct Answer: True

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Null Hypothesis is an algebraic statement that some population parameter has a _______ .

Specific value

General value

Both a & b

None of these

Answer

Correct Answer: Both a & b

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One-Sample Test uses information from a sample (its mean, SD, and N) to decide whether a _________ value for the unknown population

Specific hypothesized

General hypothesized

Simple hypothesized

None of these

Answer

Correct Answer: Specific hypothesized

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Null hypothesis significance testing involves the selection of an alpha level to limit the risk of Type I error, statements of null and alternative hypotheses .

True

False

Answer

Correct Answer: True

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