MHA 705 UPDATED PRACTICE EXAM QUESTIONS AND
SOLUTIONS RATED A+
✔✔Which research method uses self-report data? - ✔✔A survey uses self-report data.
✔✔What type of question is question 1? (Previous question) - ✔✔Question 1 is a written
question on an interview guide or
a query on a questionnaire.
✔✔Why would researchers choose to conduct a structured interview using an interview
guide? - ✔✔A researcher may choose a structured interview because
it is easier to quantify, tabulate, and analyze than anunstructured interview. An interview
guide provides
the list of questions so all the researchers ask the same
questions.
✔✔If researchers wanted to investigate the impact of changes in Medicare
reimbursement on a region's healthcare, which method would they choose? - ✔✔If
researchers wanted to investigate the impact of
changes in Medicare reimbursement on a region's
healthcare, they would most likely choose to use the
case study method.
✔✔Why would researchers choose to conduct a questionnaire survey? -
✔✔Researchers would choose to conduct a questionnaire
survey because it is efficient, it takes less time than other
methods, and it generates great numbers of responses at
a relatively low cost.
✔✔If researchers wanted to establish that a new drug caused a reduction in blood
pressure, which research method would they choose? - ✔✔If researchers wanted to
establish that a new drug causes a
reduction in blood pressure, they would choose an experiment (randomized clinical trial
or double-blind study).
Examples include the pretest-posttest control group
method, the Solomon four-group method, and the posttest-only control group method.
✔✔When would researchers choose to conduct a meta-analysis? - ✔✔Researchers
might conduct a meta-analysis when many
studies examined the same question, when the studies
have common underlying characteristics, or when some
of the studies' findings are contradictory.
, ✔✔In questions 3 through 7, what common characteristic determined the researchers'
choice of method? - ✔✔The common characteristic that determined the researchers'
choice of method in questions 3 through 7 was purpose
(or definition of the question or problem).
✔✔In which hypothesis does the researcher state what he or she believes? - ✔✔The
alternative hypothesis states what the researcher believes.
✔✔If the researcher believes that the treatment increases output, would he or she write
a one-tailed or a two-tailed hypothesis? - ✔✔If the researcher believes that the
treatment increases
output, the researcher would write a one-tailed
hypothesis.
✔✔What is the difference between a type I error and a type II error? - ✔✔A type I error
occurs when the researcher erroneously rejects the null hypothesis when it is true. A
null
hypothesis states that there is no difference between the
groups. Rejecting the null implies that there is a difference in the groups. In the type I
error, the researcher
has said a difference exists when none does (that is, the
drug really does not help the patient). A type II error
occurs when the researcher erroneously fails to reject
the null hypothesis when it is false. Failing to reject
the null hypothesis implies that there is no difference
in the groups. In a type II error, the researcher says no
difference exists when a difference does exist (that is,
the drug helps the patient but the researcher says it does
not).
✔✔What does the p-value represent - ✔✔The p-value represents the probability that
the difference occurred by pure chance.
✔✔What issues are involved in internal validity? - ✔✔Internal validity ensures that the
effect seen was caused
by the independent variable. If internal validity is
breached, the researcher cannot state that the independent variable caused a particular
effect on the dependent
variable. The issues involved in internal validity are
history, maturation, testing, instrumentation, statistical
regression, differential selection, experimental mortality, and diffusion of treatment.
✔✔Why is reliability important in tests? - ✔✔Reliability is important because it
represents the tests'
SOLUTIONS RATED A+
✔✔Which research method uses self-report data? - ✔✔A survey uses self-report data.
✔✔What type of question is question 1? (Previous question) - ✔✔Question 1 is a written
question on an interview guide or
a query on a questionnaire.
✔✔Why would researchers choose to conduct a structured interview using an interview
guide? - ✔✔A researcher may choose a structured interview because
it is easier to quantify, tabulate, and analyze than anunstructured interview. An interview
guide provides
the list of questions so all the researchers ask the same
questions.
✔✔If researchers wanted to investigate the impact of changes in Medicare
reimbursement on a region's healthcare, which method would they choose? - ✔✔If
researchers wanted to investigate the impact of
changes in Medicare reimbursement on a region's
healthcare, they would most likely choose to use the
case study method.
✔✔Why would researchers choose to conduct a questionnaire survey? -
✔✔Researchers would choose to conduct a questionnaire
survey because it is efficient, it takes less time than other
methods, and it generates great numbers of responses at
a relatively low cost.
✔✔If researchers wanted to establish that a new drug caused a reduction in blood
pressure, which research method would they choose? - ✔✔If researchers wanted to
establish that a new drug causes a
reduction in blood pressure, they would choose an experiment (randomized clinical trial
or double-blind study).
Examples include the pretest-posttest control group
method, the Solomon four-group method, and the posttest-only control group method.
✔✔When would researchers choose to conduct a meta-analysis? - ✔✔Researchers
might conduct a meta-analysis when many
studies examined the same question, when the studies
have common underlying characteristics, or when some
of the studies' findings are contradictory.
, ✔✔In questions 3 through 7, what common characteristic determined the researchers'
choice of method? - ✔✔The common characteristic that determined the researchers'
choice of method in questions 3 through 7 was purpose
(or definition of the question or problem).
✔✔In which hypothesis does the researcher state what he or she believes? - ✔✔The
alternative hypothesis states what the researcher believes.
✔✔If the researcher believes that the treatment increases output, would he or she write
a one-tailed or a two-tailed hypothesis? - ✔✔If the researcher believes that the
treatment increases
output, the researcher would write a one-tailed
hypothesis.
✔✔What is the difference between a type I error and a type II error? - ✔✔A type I error
occurs when the researcher erroneously rejects the null hypothesis when it is true. A
null
hypothesis states that there is no difference between the
groups. Rejecting the null implies that there is a difference in the groups. In the type I
error, the researcher
has said a difference exists when none does (that is, the
drug really does not help the patient). A type II error
occurs when the researcher erroneously fails to reject
the null hypothesis when it is false. Failing to reject
the null hypothesis implies that there is no difference
in the groups. In a type II error, the researcher says no
difference exists when a difference does exist (that is,
the drug helps the patient but the researcher says it does
not).
✔✔What does the p-value represent - ✔✔The p-value represents the probability that
the difference occurred by pure chance.
✔✔What issues are involved in internal validity? - ✔✔Internal validity ensures that the
effect seen was caused
by the independent variable. If internal validity is
breached, the researcher cannot state that the independent variable caused a particular
effect on the dependent
variable. The issues involved in internal validity are
history, maturation, testing, instrumentation, statistical
regression, differential selection, experimental mortality, and diffusion of treatment.
✔✔Why is reliability important in tests? - ✔✔Reliability is important because it
represents the tests'
