A 3 categories-by-3 categories two-way frequency table has a row with 2 numbers, and no row or column totals. Can you fill the row?

Explain how endotoxin gets into the bloodstream of a patient with endotoxin shock.

What is an endotoxin?

In some states, a driver of a vehicle may not use a handheld cell phone while driving. In one state with this law, 250 randomly selected drivers were surveyed to determine the association between drivers who know the law and drivers who obey the law. The results are shown in the table below. Complete the table of two-way relative frequencies using percents.

$$\begin{array}{c} \\ \qquad \qquad \text{Knows the Law} \\ \begin{array}{|c|c|c|c|} \hline \text { Obeys the Law } & \text { Yes } & \text { No } & \text { Total } \\ \hline \text { Yes } & 160= & 45= & \\ \hline \text { No } & 25= & 20= & \\ \hline \text { Total } & & & \\ \hline \end{array} \end{array}$$

What does it mean to say there is an association between characteristics in a two-way frequency table?

The results of a survey of 45 students and the foreign language they are studying are shown in the two-way frequency table.

$$\begin{array}{c} \\ \text{Language} \\ \begin{array}{|c|c|c|c|c|} \hline \text { Gender } & \text { Chinese } & \text { French } & \text { Spanish } & \text { Total } \\ \hline \text { Girl } & 2 & 8 & 15 & 25 \\ \hline \text { Boy } & 4 & 4 & 12 & 20 \\ \hline \text { Total } & 6 & 12 & 27 & 45 \\ \hline \end{array} \end{array}$$

What fraction of the surveyed students are taking Chinese?

Luis surveyed some middle school and high school students about the type of music they prefer. Complete the table.

$$\scriptstyle\begin{array}{|c|ccc|c|} \hline \text { } & \text { } & \text { Preferred Music } & \text { } & \text { } \\ \hline \text { School Level } & \text { Country } & \text { Pop } & \text { Other } & \text { Total } \\ \hline \text { Middle School } & 18 & 13 & 23 & \\ \hline \text { High School } & 7 & 32 & 15 & \\ \hline \text { Total } & & & & \\ \hline \end{array}$$

The results of a survey of 45 students and the foreign language they are studying are shown in the two-way frequency table.

$$\begin{array}{c} \\ \text{Language} \\ \begin{array}{|c|c|c|c|c|} \hline \text { Gender } & \text { Chinese } & \text { French } & \text { Spanish } & \text { Total } \\ \hline \text { Girl } & 2 & 8 & 15 & 25 \\ \hline \text { Boy } & 4 & 4 & 12 & 20 \\ \hline \text { Total } & 6 & 12 & 27 & 45 \\ \hline \end{array} \end{array}$$

What fraction of the surveyed students are taking Chinese?

Use the table of frequency data.

$$\scriptstyle\begin{array}{c} \\ \text{Class Survey of Favorite Colors} \\ \begin{array}{|l|c|c|c|c|c|c|c|} \hline \text { Favorite Color } & \text { Red } & \text { Orange } & \text { Yellow } & \text { Green } & \text { Blue } & \text { Purple } & \text { Total } \\ \hline \text { Frequency } & 2 & 5 & 1 & 6 & 8 & 2 & 24 \\ \hline \end{array} \end{array}$$

Complete the relative frequency table for this data using decimals rounded to the nearest thousandth.

$$\scriptstyle\begin{array}{c} \\ \text{Class Survey of Favorite Colors} \\ \begin{array}{|l|c|c|c|c|c|c|c|} \hline \text { Favorite Color } & \text { Red } & \text { Orange } & \text { Yellow } & \text { Green } & \text { Blue } & \text { Purple } & \text { Total } \\ \hline \text { Relative Frequency } & & & & & & & \\ \hline \end{array} \end{array}$$

Choose the sentences that best describe anaphylaxis.

a. The concentration of allergic mediators and the strength of the immune response is much greater in atopy versus anaphylaxis

b. Systemic anaphylaxis can be fatal

c. Bee venom is a strong trigger of anaphylaxis due to its complex makeup.

d. Patients will always develop an anaphylactic response upon the first encounter with an allergen.

e. Antibiotics have not been shown to trigger anaphylaxis

An example of a noncommunicable infection is a. measles $\hspace{6pt}$ b. leprosy $\hspace{6pt}$ c. tuberculosis $\hspace{6pt}$ d. tetanus

A $\rule{1cm}{0.4pt}$ infection is acquired in a hospital. a. subclinical $\hspace{6pt}$ b. focal $\hspace{6pt}$ c. nosocomial $\hspace{6pt}$ d. zoonosis

The occurrence of Lyme disease mainly in areas where certain species of ticks live would define it as a/an $\rule{1cm}{0.4pt}$ disease. a. epidemic b. pandemic c. endemic d. sporadic

Mutations are 'relatively uncommon because:

a. DNA repair enzymes often repair errors.

b. frameshift mutations occur very frequently.

c. transposons are constantly moving throughout the genome.

d. physical mutations such as X-rays seldom damage DNA.

e. DNA can repair itself over time.