Application of Normal Distribution & Steps in Hypothesis Testing

What is the decision if we reject a null hypothesis that is actually true in the population?

• Correct Decision

• α or Type I Error

• Incorrect Decision

• β or Type II Error

The statistics used to calculate the probability of an event based on information collected from a small group within a large population.

• Normal Distribution

• Standard Distribution

• Score distribution

• Sampling distribution

What is the conclusion if you have enough statistical evidence to support the alternative hypothesis?

• Reject the null hypothesis

• Fail to reject the null hypothesis

• Accept null hypothesis

• Reject alternative hypothesis

What does it mean if the hypothesis is rejected?

• results are okay.

• results are not statistically significant

• results are said to be statistically significant

• results are irrelevant

All are the levels of significance of α, EXCEPT.

• 0.05

• 0.01

• 0.0001

• 0.1

It accurately describes the distribution of values for many natural phenomena.

• Normal Distribution

• Z scores formula

• Z table

• Z scores

The distribution of diastolic blood pressure in men has a MEAN of approximately:

• 20

• 19.454

• 40

• 80

What does this symbol stands for?

• Standard Deviation

• Z score

• Mean

• Data point

Another name for z-score?

• Normal score

• Normal distribution

• Standard Score

• Standard Distribution

An advantage of normal distribution is to determine outliers.

• False

• True

• Cannot be determined

• None of the choices.