Question

1 The probability of type II error becomes bigger if the level of significance is changed...

1 The probability of type II error becomes bigger if the level of significance is changed from 0.01 to 0.05.

True

False

2

Increasing the sample size reduces the probability of committing a Type I and Type II simultaneously.

True

False

3

In testing a hypothesis about a population mean with an unknown population standard deviation (σ ) the degrees of freedom is used in the denominator of the test statistic.

True

False

4

When a researcher fails to reject a false null hypothesis, a Type II error has been committed.

True

False

Math   Statistics-And-Probability   
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Answer #1

1 The probability of type II error becomes bigger if the level of significance is changed from 0.01 to 0.05.

Answer : The given statement is True.

2)Increasing the sample size reduces the probability of committing a Type I and Type II simultaneously.

Answer : The given statement is True

3)In testing a hypothesis about a population mean with an unknown population standard deviation (σ ) the degrees of freedom is used in the denominator of the test statistic.

Answer : The given statement is false. In the denominator we used std error

4)When a researcher fails to reject a false null hypothesis, a Type II error has been committed.

Answer: The given statement is True

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