Summary statistics for the scores of the 27 students who completed a Dental Anxiety Scale questionnaire are x=10.5 and s
Posted: Wed May 11, 2022 1:23 pm
Summary statistics for the scores of the 27 students
who completed a Dental Anxiety Scale questionnaire
are x=10.5 and s=3.0. Scores range from
0 (no anxiety) to 20 (extreme anxiety). Conduct a test
of hypothesis to determine whether the mean Dental Anxiety Scale
score for the population of college students differs
from μ=11. Use α=0.01.
State the null and alternative hypotheses. Choose the correct
answer below.
A. H0: μ=11 versus H0: μ>11
B. H0: μ≠11 versus Ha: μ=11
C. H0: μ=11 versus Ha: μ≠11
Part 2
The test statistic for this small-sample test of a
population mean is enter your response here.
(Round to two decimal places as needed.)
Part 3
Find the rejection region. Choose the correct answer below.
A. t>−2.779 and t<2.779
B. t<−2.779 or t>2.779
C. t<−2.779
D. t>2.779
Part 4
State the appropriate conclusion for the test. Choose the
correct answer below.
There is insufficient evidence to reject H0.
There is sufficient evidence to reject H0.
who completed a Dental Anxiety Scale questionnaire
are x=10.5 and s=3.0. Scores range from
0 (no anxiety) to 20 (extreme anxiety). Conduct a test
of hypothesis to determine whether the mean Dental Anxiety Scale
score for the population of college students differs
from μ=11. Use α=0.01.
State the null and alternative hypotheses. Choose the correct
answer below.
A. H0: μ=11 versus H0: μ>11
B. H0: μ≠11 versus Ha: μ=11
C. H0: μ=11 versus Ha: μ≠11
Part 2
The test statistic for this small-sample test of a
population mean is enter your response here.
(Round to two decimal places as needed.)
Part 3
Find the rejection region. Choose the correct answer below.
A. t>−2.779 and t<2.779
B. t<−2.779 or t>2.779
C. t<−2.779
D. t>2.779
Part 4
State the appropriate conclusion for the test. Choose the
correct answer below.
There is insufficient evidence to reject H0.
There is sufficient evidence to reject H0.