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
, HIM 4331 - TEST #2 QUIZ 4-6 | QUESTIONS AND ANSWERS | 2026 UPDATE | 100% CORRECT
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
8. what is a binary variable?
a. a variable that can take on any value
b. a variable that can take on only positive values
c. a variable that can take only two variables
d. a variable that is not well-defined - (ANSWER)c. a variable that can take only two variables
9. A one-sample z-test for proportions may be used to:
a. determine if two population proportions are different
b. determine if mortality rate at one hospital is higher than another
c. determine if the mortality rate at one hospital is different from a state
[[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
, HIM 4331 - TEST #2 QUIZ 4-6 | QUESTIONS AND ANSWERS | 2026 UPDATE | 100% CORRECT
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
8. what is a binary variable?
a. a variable that can take on any value
b. a variable that can take on only positive values
c. a variable that can take only two variables
d. a variable that is not well-defined - (ANSWER)c. a variable that can take only two variables
9. A one-sample z-test for proportions may be used to:
a. determine if two population proportions are different
b. determine if mortality rate at one hospital is higher than another
c. determine if the mortality rate at one hospital is different from a state
