WorksheetsESTIMATION AND HYPOTHESIS
Total questions: 15
Worksheet time: 1hrs 15mins
What is the point estimate of a population mean?
σ
x bar
E
μ
Which of the following symbols stands for the margin of error?
σ
z
E
μ
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
It is a point on the borderline separating sample statistic that are likely to occur from those that are unlikely to occur.
critical value
critical region
non-critical region
non-critical value
If the researchers found out that the null hypothesis is false and they fail to reject it, their decision is a
Type I Error
Type II Error
Correct Decision
If a researcher's null hypothesis is true and it was rejected, a _________ is committed.
Type I Error
Type II Error
Correct Decision
If a researcher's null hypothesis is false and it was rejected, a _________ is committed.
Type I Error
Type II Error
Correct Decision
The jury declares the person is innocent, but he goes to jail. What type of error is this?
Type I Error
Type II Error
Correct Decision
