Is it possible for the rate of mark-up on selling price to exceed 100%? Explain.

The process of analyzing sample data in order to draw conclusions about the characteristics of a population is called

A) descriptive statistics.
B) statistical inference.
C) data analysis.
D) data summarization.

A precision control engineer is interested in the mean length of tubing being cut automatically by machine.It is known that the standard deviation in the cutting length is 0.15 feet.A sample of 60 cut tubes yields a mean length of 12.15 feet.This sample will be used to obtain a 99% confidence interval for the mean length cut by machine.
a.What is the zα _{/ 2} value to use in obtaining the confidence interval?
b.Develop the 99% confidence interval for μ.

Colby inherited a small savings-bond portfolio consisting of four $1,000 face-value Canada Savings Bonds and six $1,000 face-value Ontario Savings Bonds. In the first year, the portfolio earned $438 interest. At the end of the first year, Colby cashed in one of the Canada Savings Bonds and two of the Ontario Savings Bonds. In the following year, the remaining bonds earned $306 interest. What annual rate of interest did each type of bond earn?

Calculate the missing value: Initial Value =?; Final Value = $75; Percent Change = 200%

Evaluate the following:
$\frac{\$827.69}{1+0.125\times \frac{273}{365}}+\$531.49\left(1+0.125\times \frac{41}{365}\right)$