The local genealogical society in Coles County, Illinois, has compiled records on all 55,914 gravestones in cemeteries in the county for the years 1825 to 19 85. Historians plan to use these records to learn about African American in Coles County's history. They first choose an SRS of 395 records to check their accuracy by visiting the actual gravestones. Explain how you would use a random number generator to choose the SRS. Your description should be clear enough for a classmate to carry out your plan.

A Los Vegas handicapper can correctly predict the winning professional football team 70% of the time, find the probability that she is correct in each of her next two predictions.

In equation $y''-y=-2\cos t$ determine a particular solution by inspecting the nonhomogeneous differential equations. If a particular solution is not obvious to you, use the method of undetermined coefficients.

Faites l’activit$\'e$ suivante. (Do the following activity.)

The five "W" questions are useful when reading other types of publications besides literature. Work with a partner to make a list of them.

A group of 200 college students were asked in what subject areas they took courses during their freshman year. Below are the results of this survey. From what subject area did the fewest number of freshman take courses? What percentage of these freshman took Anatomy & Physiology? What percentage took Chemistry?\

While reading lines 32-35: Underline - hints that something bad will happen. Circle - the husband's behavior changes, In the Margin - list what is directly experienced by the narrator.

Determine the system of differential equations corresponding to each compartment model and analyze the stability of the equilibrium (0, 0). a = 0.4, b = 1.2, c = 0.3, d = 0

Use the methods of this section to solve the following differential equations. Compare computer solutions and reconcile differences. $x^{2} d y+\left(y^{2}-x y\right) d x=0$

Economists have argued that globalization is here to stay and that society needs to adapt to this process or it will be left behind. Historically, four groups have done the most to bring about globalization: traders, preachers, adventurers, and warriors. Although the motives for these groups—to profit, convert, learn, or conquer—have usually been selfish, the overall impact of their actions has been to bring about greater integration and interdependence of nations of the world. Put this view of history into the context of today’s globalization and explain why you agree or disagree

In lab you find that a 1-kg rock suspended above water weighs $10 \mathrm{~N}$. When the rock is suspended beneath the surface of the water, the scale reads $8 \mathrm{~N}$. a. What is the buoyant force on the rock? b. If the container of water weighs $10 \mathrm{~N}$ on the weighing scale, what is the scale reading when the rock is suspended beneath the surface of the water? c. What is the scale reading when the rock is released and rests at the bottom of the container?

What are the mean and standard deviation of the difference Y - X between the readings? (The readings X and Y are independent.)

Use the preceding strategies to answer these questions about the opening paragraphs of Walter Kerr's review of The Miracle Worker.

Did reading the review of the play change your response?

While reading lines 1-27: Underline - phrases that are repeated. Circle - the reason for "the trouble with poetry". In the Margin - restate lines 1-16 in your own words.

The flow lines (or streamlines) of a vector field are the paths followed by a particle whose velocity field is the given vector field. Thus the vectors in a vector field are tangent to the flow lines. If parametric equations of a flow line are $x = x(t), y = y(t)$ explain why these functions satisfy the differential equations $dx/dt = x$ and $dy/dt = -y$. Then solve the differential equations to find an equation of the flow line that passes through the point (1, 1).