Cumulative Exam — Cumulative exam Answers

An ice hockey team is considering changing their team name and mascot and would like to measure city support for the change. Which of the following methods would not provide a voluntary response sample?

A website lists homes for sale in a suburban town. The site provides information including neighborhood, selling price, age of the home (in years), number of bedrooms, and whether the home has a garage. Which of the variables is a categorical variable?

What is the exact value of cos(c + d), given for c in Quadrant II and for d in Quadrant III?

A researcher is comparing three new formulas for grass killer. To conduct the experiment, the researcher purchases 30 pieces of sod from various vendors to use in the study. To create the three treatment groups, the researcher numbers the pieces of sod 1–30 and places the numbers in a hat. The researcher randomly selects 10 numbers, making sure to mix the numbers between each selection, and then repeats that process one more time to select the pieces of sod in the experiment.

The diagram below shows vector v. Given transformation matrix , which diagram shows the application of T to v?

By what approximate factor is the intensity of an earthquake with magnitude 5.4 greater than an earthquake with magnitude 5.3?M = the magnitude of an earthquakeI = the intensity of an earthquakeI0 = the smallest seismic activity that can be measured, which is 1

What are the values of x and y in the matrix subtraction below?

What is the product?

The matrix below represents the distance in miles between three cities. A row label represents the city traveled from. A column label represents a city traveled to.What is the round trip distance in miles from city 1 to city 3?