ES031 - Finals - Bonus Activity 1

is a process that uses sample statistics to test a claim about the value of a population parameter.

• Statistical Analysis

• Descriptive Analytics

• Statistics

• Hypothesis Testing

A verbal statement, or claim, about a population parameter is called a

• Statistical Hypothesis

• Claim

• Educated Guess

• Alternative Hypothesis

is a statistical hypothesis that contains a statement
of equality such  $=,\ge,\le$  

• Null Hypothesis

• Alternative Hypothesis

is the complement of the null hypothesis.It is a statement that must be true if H0 is false and contains astatement of inequality such as  $>,<,\ne$  

• Alternative Hypothesis

• Null Hypothesis

If the hypothesis result is to reject the null hypothesis but you still decide to believe that it is true, you are committing a:

• Type I error

• Type II error

What is the decision if the test statistical values have the following characteristics:

|Zcomputed| ≥ |Zcritical|?

• Reject Ho

• Do not Reject Ho

• None of the above

What is the decision if the test statistical values have the following characteristics:

|Zcomputed| < |Zcritical|?

• Reject Ho

• Do not Reject Ho

• None of the above

This statistical test can be used when the population is normal and variance is unknown, or for any population when the sample size n is less than 30.

• Z-test

• t-test

• chi-squared test

is a statistical test for a population

proportion

• z-test

• t-test

• chi-squared test

The following are conditions in Two-sample Z-test, EXCEPT:

• The samples must be randomly selected.

• The samples must be dependent.

• Each sample size must be at least 30, or, if not, each population must have a normal distribution with a known standard deviation.

• None of the choices is correct