Because the t procedures are robust, the most important condition for their safe use is that

(a) the population standard deviation a- is known.

(b) the population distribution is exactly Normal.

(c) the data can be regarded as an SRS from the population.

Solve each open sentence if each variable represents a positive integer. 2x+y<6

Sketch the region bounded by the graphs of the algebraic functions y=x, y=2-x and y=0, and find the area of the region.

Graph the rational function. Use an open circle for a point discontinuity.

$$y=x^2-36/x-6$$

Should you use an open circle or a closed circle in the graph of the inequality b ≥ -42? Explain.

Give three ordered pairs of integers that satisfy the open sentence. 2x+3y>10

Use a line integral to find the area of the region R. R: region bounded by the graph of

Use the key terms to complete the following sentence:

The __________ is the rate banks are charged to borrow money from the Fed.

Solve each open sentence and graph each solution set. |2m+3|=5

An object's moment of inertia is $2.0 \mathrm { kg } \cdot \mathrm { m } ^ { 2 }$. Its angular velocity is increasing at the rate of 4.0 rad/s per second. What is the net torque on the object?

How does the parol evidence rule save time and money for the parties to a dispute and the court that hears it? Discuss.

Use your TI-83/89 and the two-sample procedures to replicate the results of the DDT-nerve stimulus experiment in the mentioned example. Verify that you get the same t-test statistic and P-value.

In an operational design test of the equipment of the fire truck, the water cannon is delivering fresh water through its 2-in.-diameter nozzle at the rate of 1400 gal/min at the 20$^\circ$ angle. Calculate the total friction force F exerted by the pavement on the tires of the truck, which remains in a fixed position with its brakes locked. (There are 231 in.$^3$ in 1 gal.)

Solve each open sentence.

$$\frac { x ^ { 2 } } { 9 } + \frac { x - 1 } { 10 } = 0$$