Risk analysis seeks to examine the impacts of uncertainty in the estimates and their potential interaction with one another on the output variable of interest.

A Wilcoxon rank sum test for comparing two independent samples involves two samples of sizes 6 and 9. The alternative hypothesis is that the location of population 1 is to the left of the location of population 2. Using a 0.05 significance level, the appropriate critical values are 31 and 65.

When the variance of the mean value is smaller than the variance of individual values,________.

A) the p-value is equal to the Significance F
B) the data set contains an outlier
C) the Adjusted R Square is equal to 1
D) the prediction interval is wider than the confidence interval

In a business class,15% of the students have never taken a statistics class,40% have taken only one semester of statistics,and the rest have taken two or more semesters of statistics.The professor randomly assigns students to groups of three to work on a project for the course.Assume everyone in the group is independent.What is the probability that neither of your two group mates has studied statistics?

A) 0.45
B) 0.023
C) 0.15
D) 0.85
E) 0.30

​A $1,000 bond, with interest at 8 ½% on March 1 and September 1, was purchased on June 18 at 108 plus accrued interest. Compute the entire purchase cost of the bond. (Assume a 360-day year and a commission of $5 per bond.)

In stratified random sampling,​

A) ​randomly selected elements within each of the strata form the sample.
B) ​all elements within the randomly selected strata form the sample.
C) ​randomly selected elements within the randomly selected strata form the sample.
D) ​all elements within each of the strata form the sample.

Suppose a 90% confidence interval for the mean time it takes to serve a customer at a drive-in bank is 120 seconds to 220 seconds. In repeated sampling 90% of the intervals constructed using the appropriate formula will contain the actual mean time.