HIM 4331 - TEST #2 QUIZ 4-6 | QUESTIONS AND
ANSWERS | 2026 UPDATE | 100% CORRECT
[[Quiz 4]]
1. The descriptive statistic most often used with normal and ordinal data is:
a. median
b. frequency distribution
c. z-test
d. confidence interval Answer - b. frequency distribution
2. the relationship between patient gender and readmission to the hospital is
best displayed using a:
a. frequency chart
b. contingency table
c. bar chart
d. pie chart Answer - b. contingency table
3. which of the following should be considered when selecting an alpha level
for a hypothesis?
a. the cost of incorrectly rejecting the null hypothesis
b. alpha level is 0.05 based on statistical standards
c. the sample size and data type
, d. the proportion of successes observed in the data Answer - a. the cost of
incorrectly rejecting the null hypothesis
4. p-vaue is:
a. the statiscal proportion
b. the same as the alpha level
c. smallest type I for which the null hypothesis will be rejected
d. the power level of the test Answer - C. the smallest type I for which the null
hypothesis will be rejected
5. the inpatient mortality rate for congestive heart failure (CHF) was at 5% at a
local hospital during the last year. If 500 patients were admitted for CHF during
the last year, how many of these patients died? Answer - 25
(500*.05=25)
6. what is the proportion of patients that died in this sample of 10:
D, D, A, A, A, A, A, D, A , A Answer - 30%
(3/10=.3*100=30%)
7. Which of the following does not influence the level of type II error?
a. sample size
b. selection of test statistics
c. null hypothesis value
d. All of these influence type II error Answer - c. null hypothesis value
ANSWERS | 2026 UPDATE | 100% CORRECT
[[Quiz 4]]
1. The descriptive statistic most often used with normal and ordinal data is:
a. median
b. frequency distribution
c. z-test
d. confidence interval Answer - b. frequency distribution
2. the relationship between patient gender and readmission to the hospital is
best displayed using a:
a. frequency chart
b. contingency table
c. bar chart
d. pie chart Answer - b. contingency table
3. which of the following should be considered when selecting an alpha level
for a hypothesis?
a. the cost of incorrectly rejecting the null hypothesis
b. alpha level is 0.05 based on statistical standards
c. the sample size and data type
, d. the proportion of successes observed in the data Answer - a. the cost of
incorrectly rejecting the null hypothesis
4. p-vaue is:
a. the statiscal proportion
b. the same as the alpha level
c. smallest type I for which the null hypothesis will be rejected
d. the power level of the test Answer - C. the smallest type I for which the null
hypothesis will be rejected
5. the inpatient mortality rate for congestive heart failure (CHF) was at 5% at a
local hospital during the last year. If 500 patients were admitted for CHF during
the last year, how many of these patients died? Answer - 25
(500*.05=25)
6. what is the proportion of patients that died in this sample of 10:
D, D, A, A, A, A, A, D, A , A Answer - 30%
(3/10=.3*100=30%)
7. Which of the following does not influence the level of type II error?
a. sample size
b. selection of test statistics
c. null hypothesis value
d. All of these influence type II error Answer - c. null hypothesis value
