1. Which of the following is used to calculate the standard error for a proportion when calculating a confidence interval?

Group of answer choices

a. sqrt( p-hat*(1-p-hat)/n )

b. p_nulll*(1-p_null)/n

c. s^2/n

d. sqrt( p_nulll*(1-p_null)/n )

e. p-hat*(1-p-hat)/n

f. s/sqrt(n)

2. SPH administrators were interested in assessing whether the proportion of students who passed the Certified in Public Health exam was significantly different from 0.6. Of the 30 students that took the Certified in Public Health exam, the proportion that passed was 0.80. Calculate the standard error for conducting the hypothesis test. Carry out all calculations to five decimal places. Record final answer to three decimal places.

3. Which of the following is most likely the correlation relating blood sugar level versus average number of servings of vegetables per day over the last 21 days?

a. -0.30

b. 0.45

c. 0.00

d. 0.90

4. Which of the following is most likely the correlation relating the heart rate in the morning, at rest, versus heart rate in the evening, at rest across a population of 30 to 39 year olds?

Group of answer choices

a. 0.80

b. 0.00

c. -0.30

d. 0.20

5. Which of the following samples would you expect to provide the least precise estimate for the average blood pressure among adult working men?

Group of answer choices

a. A simple random sample of 50 working men between the ages of 30 and 45

b. A simple random sample of 50 working men between the ages of 30 and 60

c. A simple random sample of 100 working men between the ages of 30 and 45

d. A simple random sample of 100 working men between the ages of 30 and 60

6. Information about job status (unemployed, full-time employee, part-time employee, retired) is what type of variable?

Group of answer choices

a. Nominal

b. Ordinal

c. Continuous

d. Binary

7. When a variable has a skewed distribution, what statistics would best summarize its values?

Group of answer choices

a. Median and Interquartile range

b. Mean and standard deviation

c. Mean and interquartile range

d. Median and standard deviation

8. What type of hypothesis test would most likely be used to examine the association between whether someone is vegetarian (yes/no) and weight (in lbs.) using data from a cross-sectional study?

Group of answer choices

a. Chi-square test

b. Two-group t-test

c. Levene's Test

d. Paired t-test

9. Which of the following describes the distribution of a statistic?

Group of answer choices

a. Sample Distribution

b. Frequency Distribution

c. Sampling Distribution

d. Population Distribution

10. Failing to reject the null hypothesis when the alternative hypothesis is true is a

Group of answer choices

a. Power

b. Type 2 error

c. Type 1 error

d. Not an error

11. Which of the following is a correct interpretation regarding a 95% confidence interval for a mean?

Group of answer choices

a. 95% of the population is expected to fall within this range

b. There is a 95% chance the sample mean is within this range

c. We can be 95% confident the population mean is within this range

d. There is a 95% chance the population mean is within this range

e. 95% of the sample is expected to fall within this range

f. We can be 95% confident the sample mean is within this range

12. How would you measure the strength of the association between whether a student participated in a particular after school program and graduation from high school in a disadvantaged population?

Group of answer choices

a. Chi-square test

b. Two sample t-test

c. Odds ratio

d. Correlation

e. Difference of means