Social class level influences the likelihood of gaining political power. Can you analyze the relationship between social class level and political power?

Which social class came to control the economy as well as the political and social institutions of the South?

Form B from A by performing the elementary row operation(s), then produce a matrix $\Omega$ such that $\boldsymbol{\Omega A}=\mathbf{B}.$

$$\mathbf{A}=\left( \begin{array}{rrr}{-2} & {14} & {6} \\ {8} & {1} & {-3} \\ {2} & {9} & {5}\end{array}\right)$$

Add $\sqrt{13}$ times row three to row one, then interchange rows two and one and then multiply row one by 5.

You will encounter many words in this reading that you do not know. Sometimes these words are cognates, which you can get after reading them alone. Look at the following cognates from the reading and write the corresponding English word.

contemplado____________

Rewrite the following sentence to correct each ambiguous, general, weak, or indefinite pronoun reference. EXAMPLE: Kaitlin gave Lynda the photographs just before she went to lunch. Just before Kaitlin went to lunch, she gave Lynda the photographs. or Just before Lynda went to lunch, Kaitlin gave her-the photographs.

Clowns were performing acrobatics on the median, and that slowed traffic all morning.

Refer to the previous exercise. (a) In their article, the researchers state that each of their response variables was assessed for Normality prior to performing a two-way ANOVA. Is it necessary for the 246 time measurements to be Normally distributed? Explain your answer. (b) Is it reasonable to pool the variances? (c) Suppose for these data that SS(gender) $=44.66, \mathrm{SS}$ (age) $=31.97$, SS(interaction) $=13.22$, and SSE $=280.95$. Construct an ANOVA table and state your conclusions.

Write a computer program that produces the desired output from the given input. Input: Adjacency matrix A for a directed graph. Output: Reachability matrix R for the graph, computed by using Warshall’s algorithm.

Open computer molecular models for dimethyl ether, dimethylacerylene, and cis-1,2-dichloro-1,2-difluoroechene from the 3D Molecular Models section of the book's website. By interpreting d1e computer molecular model for each one, draw (a) a dash formula, (b} a bond-line formula, and (c) a three-dimensional dashed-wedge formula. Draw the models in whatever perspective is most convenient-generally the perspective in which the most atoms in the chain of a molecule can be in the plane of the paper.

Would you use a sample or a census to measure each of the following? Why? If you are uncertain, explain the issues.

a. The mean time battery life of your laptop computer in continuous use.

b. The number of students in your statistics class who brought laptop computers to class today.

c. The average price paid for a laptop computer by students at your university.

d. The percentage of disk space available on laptop computers owned by your five closest friends.

Calls to Insurance Claims Office. The time (in minutes) between telephone calls at an insurance claims office has the following exponential probability distribution.

$$f(x)=.50 e^{-50 x} \quad \text { for } x \geq 0$$

d. What is the probability of having 5 or more minutes without a telephone call?

In contrast to the situation of the previous exercise, experiments show that the reaction $H_2 + Br_2 \rightarrow 2HBr$ satisfies the rate law

$$\dfrac{d[HBr]}{dt} = k[H_2][Br_2]^{1/2}$$

and so for this reaction the differential equation becomes

$$\dfrac{dx}{dt} = k(a - x)(b - x)^{1/2}$$

where $x = [HBr]$ and $a$ and $b$ are the initial concentrations of hydrogen and bromine. If $a > b$, find $t$ as a function of $x$. [Hint: In performing the integration, make the substitution $u = \sqrt{b - x}$.]

Complete the following table.

The table below lists the majors of students at a small college.

a. Make a circle graph to represent this data.

Performing an experiment similar to Millikan's oil drop experiment, a student measures these charge magnitudes:

$$3.26 \cdot 10^{-19} \mathrm{C} \quad 5.09 \cdot 10^{-19} \mathrm{C} \quad 1.53 \cdot 10^{-19} \mathrm{C}$$

$$6.39 \cdot 10^{-19} \mathrm{C} \quad 4.66 \cdot 10^{-19} \mathrm{C}$$

Find the charge on the electron using these measurements.