ESTIMATION AND HYPOTHESIS

What is the point estimate of a population mean?

• x bar

• E

Which of the following symbols stands for the margin of error?

• z

• E

It is a range of values that is used to estimate a parameter. 

• point estimate

• confidence level

• confidence interval

• significance level

What do you call the value resulting from subtracting the margin of error from the sample mean?

• point estimate

• interval estimate

• lower limit of the interval estimate

• upper limit of the interval estimate

Which of the following is NOT needed in computing the margin of error for the estimation of the population mean?

• sample mean

• population standard deviation

• confidence level

• sample size

It is a proposed assumption, explanation or assertion, about a population parameter.

• decision

• statistics

• probability

• hypothesis

It is an initial claim based on previous analyses, which the researcher tries to disprove, reject, or nullify.

• null hypothesis

• alternative hypothesis

• directional hypothesis

• non-directional hypothesis

Which of the following symbols DOES NOT belong to the group of symbols used for alternative hypothesis?

• =

• >

• <

Which of the following is a one-tailed test?

• critical test

• significance test

• directional test

• non-directional test

Which region refers to the rejection region?

• critical region

• significance region

• non-critical region

• null region