Find the value of each permutation. P(8, 3)

Find the value of each permutation. $_{4} P_{0}$

Use the following data set. The data represent the air quality indices for 30 U.S. cities.

$$\begin{array}{llllllllll} 25 & 35 & 20 & 75 & 10 & 10 & 61 & 89 & 44 & 22 \\ 34 & 33 & 38 & 30 & 47 & 53 & 44 & 57 & 71 & 20 \\ 42 & 52 & 48 & 41 & 35 & 59 & 53 & 61 & 65 & 25 \end{array}$$

Make a stem-and-leaf plot of the data set. Use one line per stem.

Name the triangle sides that are parallel to the given side.

$$\overline{C B}$$

In Exercises $54$ through $61$, find all of the values of $\theta$ in the specified interval that satisfy the given equation.

$$\cos \theta-\sin 2 \theta=0 ; 0 \leq \theta \leq 2 \pi$$

Name a pair of parallel lines other than the pair in Exercise 9. Why must they be parallel?

Find the equation of the line through (-4, 5) that is parallel to the line through (1, 3) and (-4, 2).

Name the triangle sides that are parallel to the given side.

$\overline{X Z}$

Use the diagram to name each of the following.

all lines that are parallel to $\overleftrightarrow{R V}$

Find an equation for each line in the form $a x+b y=c,$ where a, b, and c are integers with no factor common to all three and $a \geq 0.$ Through (0, 5), perpendicular to $8 x+5 y=3$

Find the value of each permutation. $_{6} P_{2}$

For Exercise given below, perform these steps. Assume that all variables are normally or approximately normally distributed, that the samples are independent, and that the population variances are equal.

a. State the hypotheses.

b. Find the critical value for each F test.

c. Complete the summary table and find the test value.

d. Make the decision.

e. Summarize the results. (Draw a graph of the cell means if necessary.)

A medical researcher wishes to test the effects of two diets and the time of day on the sodium level in a person's blood. Eight people are randomly selected, and two are randomly assigned to each of the four groups. Analyze the data shown in the tables here, using a two-way ANOVA at $\alpha=0.05$. The sodium content is measured in milliequivalents per liter.

ANOVA Summary Table for Exercise

The 3-m-long bar is made of aluminum alloy 2014T6. If it is fixed at its bottom and pinned at the top, determine the maximum allowable eccentric load P that can be applied using the equations of Sec. 13.6 and the interaction formula with $\left(\sigma_b\right)_{\text {allow }}=126 \mathrm{MPa}$.

Ice-resurfacing machines use internal combustion engines that give off exhaust containing $\mathrm{CO}$ and $\mathrm{NO}_x$. Average $\mathrm{CO}$ concentrations measured in local ice rinks have been reported as high as $107 \mathrm{Ppm}_{\mathrm{v}}$ and as low as $36 \mathrm{Ppm}_{\mathrm{v}}$. How do these concentrations compare with an outdoor air quality $1 \mathrm{~h}$ standard of $35 \mathrm{mg} / \mathrm{m}^3$ ? Assume the temperature equals $20^{\circ} \mathrm{C}$.