Statistics Quiz

Which of the following denotes the true value that would be obtained if a census rather than a sample was undertaken?

• Parameter

• Population

• Sample

• Statistics

What is the statistical method used in making decisions using experimental data?

• Analytical testing

• Hypothesis testing

• Experimental testing

• Simple analysis

Which of the following population parameters is used as symbol for the mean or average population?

• σ

• p

• μ

• x

The numerical measure that describes the certain characteristics of a population is called ______________.

• Parameter

• Population

• Sample

• Statistics

In the two-tailed test, the rejection region lies on ___________ of the normal distribution:

• both tails

• left tail

• center

• right tail

What test statistic can be used when the population standard deviation is unknown?

• t - test

• z - test

• population mean

• standard deviation

It is a proposed explanation, assertion, or assumption about a population parameter or about the distribution of a random variable.

• Decision

• Hypothesis

• Probability

• Statistics

What test statistic can be used when the population standard deviation is known?

• t-test

• z-test

• population mean

• standard deviation

The value that separates a rejection region from an acceptance region is called a ___________.

• critical value

• Hypothesis

• Parameter

• significance level

The sign of the alternative hypothesis in a left-tailed test is always ________.

• Equal

• not equal

• less than

• greater than