NSG 522 EPIDEMIOLOGY AND BIOSTAT
MIDTERM, NSG 522 MIDTERM EXAM 2025/2026
BANK COMPLETE 500 QUESTIONS WITH
DETAILED VERIFIED ANSWERS (100%
CORRECT ANSWERS) / / EXPERT VERIFIED FOR
GURANTEED PASS / LATEST UPDATE
When comparing hemoglobin A1C measurements that re
normally distributed with no outliers in 2 independent
groups, the researcher should use which of the following?
Fisher exact
pearson correlation
independent t test
kruskal-wallis ANOVA - ....ANSWER...Independent t test
When performing a hypothesis test to compare groups, a
type 1 error is made when a researcher
A. Rejects the alternative hypothesis
,B. Concludes that there is a significant difference between
groups when there really is not a difference
C. Accepts the null hypothesis
D. Concludes that there is not a statistically significant
difference when there really is a difference -
....ANSWER...B. Concludes that there is a significant
difference between groups when there really is not a
difference
When performing a hypothesis test, a type 2 error occurs
when the researcher incorrectly
A. Accepts the alternative hypothesis
B. Concludes that the findings are not statistically
significant
C. Rejects the null hypothesis
D. Concludes that the findings are statistically significant -
....ANSWER...B. Concludes that the findings are not
statistically significant
A 95% confidence interval for a mean indicates
,A. 95% of the observations are located within the interval
B. there is a 95% chance that the finding is statistically
significant
C. We can be 95% confident that the true population mean
lies within the interval
D. All of the above - ....ANSWER...c. We can be 95%
confident that the true population mean lies within the
interval
Nonprobability samples are selected using a random
process - ....ANSWER...False
Which of the following sampling methods would provide
the best representation of a population with the following
racial compisition: 68% white, 15% African American,
12% Hispanic, 5% Asian
Cluster sample
Simple random sample
Quota sample
Stratified random sample - ....ANSWER...stratified
random sample
, A 95% confidence interval for the mean of a set of height
measurement is 62.9 and 64.5 inches. This finding means
that
A.There is a 5% chance of a type 1 error
B. We can be 95% confident that the true populations mean
is between 62.9 and 64.5 inches
C. The confidence interval is not statistically significant
D. 95% of the observations in the data set are between
62.9 and 64.5 inches. - ....ANSWER...B. We can be 95%
confident that the true populations mean is between 62.9
and 64.5 inches
The standard error of the mean is a measure of the spread
of observations around the mean of the observations -
....ANSWER...False
Which of the following are probability samples? SELECT
ALL THAT APPLY
Cluster Sample
MIDTERM, NSG 522 MIDTERM EXAM 2025/2026
BANK COMPLETE 500 QUESTIONS WITH
DETAILED VERIFIED ANSWERS (100%
CORRECT ANSWERS) / / EXPERT VERIFIED FOR
GURANTEED PASS / LATEST UPDATE
When comparing hemoglobin A1C measurements that re
normally distributed with no outliers in 2 independent
groups, the researcher should use which of the following?
Fisher exact
pearson correlation
independent t test
kruskal-wallis ANOVA - ....ANSWER...Independent t test
When performing a hypothesis test to compare groups, a
type 1 error is made when a researcher
A. Rejects the alternative hypothesis
,B. Concludes that there is a significant difference between
groups when there really is not a difference
C. Accepts the null hypothesis
D. Concludes that there is not a statistically significant
difference when there really is a difference -
....ANSWER...B. Concludes that there is a significant
difference between groups when there really is not a
difference
When performing a hypothesis test, a type 2 error occurs
when the researcher incorrectly
A. Accepts the alternative hypothesis
B. Concludes that the findings are not statistically
significant
C. Rejects the null hypothesis
D. Concludes that the findings are statistically significant -
....ANSWER...B. Concludes that the findings are not
statistically significant
A 95% confidence interval for a mean indicates
,A. 95% of the observations are located within the interval
B. there is a 95% chance that the finding is statistically
significant
C. We can be 95% confident that the true population mean
lies within the interval
D. All of the above - ....ANSWER...c. We can be 95%
confident that the true population mean lies within the
interval
Nonprobability samples are selected using a random
process - ....ANSWER...False
Which of the following sampling methods would provide
the best representation of a population with the following
racial compisition: 68% white, 15% African American,
12% Hispanic, 5% Asian
Cluster sample
Simple random sample
Quota sample
Stratified random sample - ....ANSWER...stratified
random sample
, A 95% confidence interval for the mean of a set of height
measurement is 62.9 and 64.5 inches. This finding means
that
A.There is a 5% chance of a type 1 error
B. We can be 95% confident that the true populations mean
is between 62.9 and 64.5 inches
C. The confidence interval is not statistically significant
D. 95% of the observations in the data set are between
62.9 and 64.5 inches. - ....ANSWER...B. We can be 95%
confident that the true populations mean is between 62.9
and 64.5 inches
The standard error of the mean is a measure of the spread
of observations around the mean of the observations -
....ANSWER...False
Which of the following are probability samples? SELECT
ALL THAT APPLY
Cluster Sample
