1. A (n) ____________________ hypothesis is a hypothesis that stands in oppositi

Question

1. A (n)            ____________________ hypothesis is a hypothesis that stands in opposition to the null hypothesis.

2. An alternative or research hypothesis that specifies the nature or direction of a hypothesized difference is considered a _______________________.

3. A _________________ tailed test scenario is appropriate when the alternative or research hypothesis is non-directional in nature.

4. A _________________ tailed test scenario is appropriate when the alternative or research hypothesis is directional in nature.

5. A Type I error involves ______________ a null hypothesis when it is _____________.

6. A Type II error involves _____________ a null hypothesis when it is _____________.

Explanation / Answer

1. A (n) Alternative hypothesis is a hypothesis that stands in opposition to the null hypothesis.

In hypothesis testing we start with null hypothesis and an alternative hypothesis which opposes the null hypothesis

2. 2. An alternative or research hypothesis that specifies the nature or direction of a hypothesized difference is considered a single tailed test scenario or a directional hypothesis.

Eg: H0 : x>=25. H1: x<25 . where H0 is null and H1 is alternate hypothesis

Here our significance / critical zone is one sided ( left tailed test).

3. A two tailed test scenario is appropriate when the alternative or research hypothesis is non-directional in nature.

Eg H0: x =25 ; H1: x not equal to 25.

H0 will be rejected if x is significantly higher or lower than 25. hence it is a two tailed test

4. A single tailed test scenario is appropriate when the alternative or research hypothesis is directional in nature.

Eg: H0 : x>=25. H1: x<25 . where H0 is null and H1 is alternate hypothesis

Here our significance / critical zone is one sided ( single tailed test).

5. A Type I error involves rejecting a null hypothesis when it is actually true.

6. A Type II error involves accepting a null hypothesis when it is actually false.

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