A subtle form of racial discrimination in housing is "racial steering." Racial steering occurs when real estate agents show prospective buyers only homes in neighborhoods already dominated by that family's race. This violates the Fair Housing Act of 1968. According to an article in Chance magazine (Vol. 14, no. 2 [2001]), tenants at a large apartment complex recently filed a lawsuit alleging racial steering. The complex is divided into two parts: Section A and Section B. The plaintiffs claimed that white potential renters were steered to Section A, while African-Americans were steered to Section B. The table displays the data that were presented in court to show the locations of recently rented apartments. Do you think there is evidence of racial steering?

$$\begin{array}{|l|cc|c|}\hline &\text { New Renters } \\ \hline & \text { White } & \text { Black } & \text { Total } \\ \hline \text { Section A } & 87 & 8 & 95 \\ \text { Section B } & 83 & 34 & 117 \\ \hline \text { Total } & 170 & 42 & 212 \\ \hline\end{array}$$

If there is no seasonal effect on human births, we would expect equal numbers of children to be born in each season (winter, spring, summer, and fall). A student takes a census of her statistics class and finds that of the 120 students in the class, 25 were born in winter, 35 in spring, 32 in summer, and 28 in fall. She wonders if the excess in the spring is an indication that births are not uniform throughout the year. What is the expected number of births in each season if there is no "seasonal effect" on births?

Biological tissues are typically made up of 98% water. Given that the density of water is $1.0 \times 10^{3} \mathrm{kg} / \mathrm{m}^{3}$, estimate the mass of (a) the heart of an adult human; (b) a cell with a diameter of $0.5 \mu \mathrm{m}$; (c) a honeybee.

Adams Co. reports the following balance sheet accounts as of December 31. Prepare a classified balance sheet.

Particulars	Amount
Salaries payable	$    6,000
Buildings	55,000
Prepaid rent	7,000
Merchandise inventory	14,000
Accounts payable	10,000
Prepaid insurance	3,000
Accounts receivable	4,000
D. Adams, Capital	60,000
Notes payable (due in 9 years)	30,000
Office supplies	2,000
Land	22,000
Accumulated depreciation - Building	5,000
Mortgages payable (due in 5 years)	12,000
Cash	16,000

You are the nurse on duty on the intermediate care unit, and you are scheduled to take the next admission. The emergency department (ED) nurse calls to give you the following report:"This is Barb in the ED, and we have a $42$-year-old man, K.L., with lower Gl (gastrointestinal) bleeding. He is a sandblaster with a $12$-year history of silicosis. He is taking $40$ of prednisone per day. During the night, he developed severe diarrhea. He was unable to get out of bed fast enough and had arge maroon-colored stool in the bed. His wife 'freaked' and called the paramedics. He is coming to you. His vital signs (VS) are stable-$110/64, 110$, $28$-and he's a little agitated. His temperature is $98.2^{\circ} \mathrm{F}\left(36.8^{\circ} \mathrm{C}\right)$. He has not had any stools since admission, but his rectal exam was guaiac positive and he is pale but not diaphoretic. We have him on $5 \mathrm{~L} \mathrm{O}_2 / \mathrm{NC}$. We started a $16$-gauge IV with lactated Ringer's at $125 \mathrm{~mL} / \mathrm{hr}$. He has an $18$-gauge Salem Sump to continuous low suction; that drainage is also guaiac positive. We have done a CBC with differential, chem $14$, coagulation times, a T&C (type and crossmatch) for $4$ units RBCs, arterial blood gasses, and a urinalysis (UA). He's all ready for you."

While caring for K.L., which of these care activities can be safely delegated to the nursing assistive personnel (NAP)? (Select all that apply.)

• a. Initiating a pulse oximetry monitoring
• b. Measuring K.L.'s vital signs every $15$ minutes
• c. Obtaining consent from K.L. for a possible blood transfusion
• d. Assessing K.L.'s peripheral circulation
• e. Emptying each Foley catheter collection bag each hour
• f. Monitoring K.L.'s hemoglobin and hematocrit levels

Which of the following policies would be the most appropriate for improving these economic conditions? Actual GDP in a country is estimated to be 10% below potential GDP. Prices are virtually unchanged from one year ago. Unemployment is 12 % of the civilian workforce, much higher than it has been in many years.

A. reductions in the federal debt
B. decreases in interest rates by the central bank
C. increases in corporate and personal income taxes
D. increases in reserve requirements on deposits at commercial banks to protect depositors

Tris (hydroxymethyl)aminomethane, commonly called TRIS or Trizma, is often used as a buffer in biochemical studies. Its buffering range is from pH 7 to $9 ,$ and $K _ { b }$ is $1.19 \times 10 ^ { - 6 }$ for the reaction

$$\begin{array} {l}{{\left( \mathrm { HOCH } _ { 2 } \right) _ { 3 } \mathrm { CNH } _ { 2 } ( a q ) + \mathrm { H } _ { 2 } \mathrm { O } ( l ) \rightleftharpoons \left( \mathrm { HOCH } _ { 2 } \right) _ { 3 } \mathrm { CNH } _ { 3 } ^ { + } ( a q ) + \mathrm { OH } ^ { - } ( a q )} \\\quad {\text{TRIS}\quad \quad \quad \quad \quad \quad \quad \quad \quad \quad \quad \quad \quad \text{TRISH}^+}} \end{array}$$

A buffer is prepared by diluting 50.0 g of TRIS base and 65.0 g of TRIS hydrochloride (written as TRISHCl to a total volume of 2.0 L. What is the pH of this buffer? What is the pH after 0.50 mL of 12 M HCl is added to a 200.0-mL portion of the buffer?

T.B. is a $65$-year-old retiree who is admitted to your unit from the emergency department (ED). On arrival, you note that he is trembling and nearly doubled over with severe abdominal pain. T.B. indicates that he has severe pain in the right upper quadrant (RUQ) of his abdomen that radiates through to his mid-back as a deep, sharp, boring pain. He is more comfortable walking or sitting bent forward rather than lying flat in bed. He admits to having had several similar bouts of abdominal pain in the last month, but "none as bad as this." He feels nauseated but has not vomited, although he did vomit a week ago with a similar episode. T.B. experienced an acute onset of pain after eating fish and chips at a fast-food restaurant earlier today. He is not happy to be in the hospital and is grumpy that his daughter insisted on taking him to the ED for evaluation.

After orienting him to the room, you perform your physical assessment. The findings are as follows: He is awake, alert, and oriented $\times 3$, and he moves all extremities well. He is restless, is constantly shifting his position, and complains of fatigue. Breath sounds are clear to auscultation. Heart sounds are clear and crisp, with no murmur or rub noted and with a regular rate and rhythm. Abdomen is flat, slightly rigid, and very tender to palpation throughout, especially in the RUQ; bowel sounds are present. He reports having light-colored stools for $1$ week. The patient voids dark amber urine but denies dysuria. Skin and sclera are jaundiced. Admission vital signs are BP $164/100$, pulse of $132$ beats $/ \mathrm{min}$, respiration $26$ breaths/min, temperature of $100^{\circ} \mathrm{F}\left(37.8^{\circ} \mathrm{C}\right), \mathrm{Spo}_2 96 \%$ on $2 \mathrm{~L}$ of oxygen by nasal cannula.

What discharge teaching does T.B. need?

Refer to the Academy of Management Journal (August 2008) investigation of the performance and timing of corporate acquisitions, Exercise $2.12$ (p. 74). Data on the number of firms sampled and the number that announced one or more acquisitions from 1980 to 2000 are saved in the accompanying file. Assume you want to determine if the proportion of firms with acquisitions differed annually from 1990 to 2000; that is, you want to examine if year and acquisition status were dependent from 1990 to 2000.

b. Set up the null and alternative hypotheses for the test.

Each salesperson at Puchett, Sheets and Hogan Insurance Agency receives one of three sales aptitude ratings: below average, average, or above average. Each salesman is also given a rating based on how likely they are to advance: fair, good, or excellent. The following table shows how these characteristics for the 500 salespeople were cross-classified. What is the name of this table?

	Potential for Advancement	Potential for Advancement	Potential for Advancement
Sales Ability	Fair	Good	Excellent
Below average	16	12	22
Average	45	60	45
Above average	93	72	135

In $1948$, Father Terminiello, a Roman Catholic priest, arrived to make a speech at a Chicago auditorium. Outside the auditorium about $300$ people were picketing his speech. Inside, Terminiello criticized Jews and African Americans, as well as the crowd outside. By the time his speech was finished, $1,500$ people had gathered outside. A police line prevented the protesters from entering the building. However, the "howling mob" outside was throwing stones and bricks at the building, and the police were unable to maintain control. The crowd was also yelling at and harassing people who came to hear Terminiello speak. Terminiello was arrested and charged with disorderly conduct under an ordinance forbidding any breach of the peace. He was convicted, and his conviction was upheld in the Illinois courts. However, in a $5$-to-$4$ decision, the U.S. Supreme Court reversed his conviction, ruling that the breach of the peace ordinance was vague and punished some speech that should have been protected.

Under what circumstances, if any, should people be prohibited from voicing unpopular views ? Explain your answer.

Figure shows the rate of HPV infection among surveyed females in the United States. Several fac-tors are linked to the rate of infection among certain demographic groups. Use the chart to answer the questions. $$ \begin{matrix} \text{Factor} & \text{Demographic Group} & \text{Rate of intection}\\ \text{Age} & \text{14-19} & \text{40\\%}\\ \text{Age} & \text{20-24} & \text{50\\%}\\ \text{Age} & \text{25-29} & \text{28\\%}\\ \text{Age} & \text{30-39} & \text{37\\%}\\ \text{Age} & \text{40-49} & \text{25\\%}\\ \text{Age} & \text{50-59} & \text{20\\%}\\ \text{Racel Ethnicity} & \text{African-American} & \text{39\\%}\\ \text{Racel Ethnicity} & \text{Caucasian} & \text{24\\%}\\ \text{Racel Ethnicity} & \text{Hispanic} & \text{24\\%}\\ \text{Economic Status} & \text{Below the poverty line} & \text{38\\%}\\ \text{Economic Status} & \text{At/above the poverty line} & \text{24\\%}\\ \end{matrix} $$ Which race/ethnicity is most likely to become infected with HPV?

In $1948$, Father Terminiello, a Roman Catholic priest, arrived to make a speech at a Chicago auditorium. Outside the auditorium about $300$ people were picketing his speech. Inside, Terminiello criticized Jews and African Americans, as well as the crowd outside. By the time his speech was finished, $1,500$ people had gathered outside. A police line prevented the protesters from entering the building. However, the "howling mob" outside was throwing stones and bricks at the building, and the police were unable to maintain control. The crowd was also yelling at and harassing people who came to hear Terminiello speak. Terminiello was arrested and charged with disorderly conduct under an ordinance forbidding any breach of the peace. He was convicted, and his conviction was upheld in the Illinois courts. However, in a $5$-to-$4$ decision, the U.S. Supreme Court reversed his conviction, ruling that the breach of the peace ordinance was vague and punished some speech that should have been protected.

Should the police have controlled the crowd instead of arresting Terminiello? Did the police violate his First Amendment rights? Why or why not?

Let $X_1, . . . , X_n$ be i.i.d. with mean $\mu$, variance $\sigma^2$, and MGF $M$. Let

$$Z _ { n } = \sqrt { n } ( \frac { \overline { X } _ { n } - \mu } { \sigma } )$$

(a) Show that $Z_n$ is a standardized quantity, i.e., it has mean 0 and variance 1. (b) Find the MGF of $Z_n$ in terms of $M$, the MGF of each $X_j$ .