1. What is the basic difference between evaluating costs and benefits in the public and private sectors?

a. The benefits of public projects are easily quantifiable

b. The costs associated with public projects are minimal

c. The benefit of private is general public welfare

d. Private projects generate considerable revenue

What is a basic assumption of a z-score?

a. Outlier data points are critical to a z-score calculation

b. The mean is equal to zero with a standard deviation of 2.

c. Outlier data points must be eliminated from a z-score calculation

d. The mean is equal to zero with a standard deviation of 1.

A customer service department implements new training for employees to help lower their average call times. The manager would like to determine whether the average call time before training differs from the average call time after training. Which means should this manager use to decide if the training was effective?

a. Z-score compared to the p-value

b. Median compared to the mode

c. Variance compared to the standard deviation

d. T-statistic compared to the t-critical value

Which analytic used in healthcare is calculated as a proportion of new cases compared to person-time units?

a. Prevalence

b. Cumulative incidence

c. Incidence rate

d. Morbidity rate

Why are sample sizes important for ensuring statistical significance?

a. So that no additional analysis is required

b. So that accurate conclusions can be confidently applied to larger populations

c. So that the possibility of researcher bias is eliminated

d. So that a hypothesis cannot be misinterpreted

Which two results happen when the null hypothesis is rejected using a t-test? (Pick 2)

a. The test statistic is less than the critical value

b. The P-value is less than the significance level

c. The p-value is greater than the significance level

d. the test statistic is greater than the critical value