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Mathematics Questions and Answers April 10, 2023

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Few books sell well. For each new book published, OHaganBooks.com orders a certain number of copies and tracks how many they can sell in the first year. It has found that the fraction, X, of copies they sell of the number they ordered, is a random variable with a beta distribution with parameter B = 0.6. Find the probability that a given book will

Which pairs of numbers are the same distance apart as 2.9 and 3.8? Select all that apply. Which pairs of numbers are the same distance apart as 2.9 and 3.8? Select all that apply. 0 and 0.8 0 and 0.9 1.0 and 1.9 1.8 and 2.9 1.9 and 2.8

Problem Set 2: A product developer wanted to know the preferred advertising strategy for a new toothpaste, and if it differs among three target demographic groups: 12-24, 25-40, and 40-60 year olds. There were two versions of advertisements for the toothpaste. Each person indicated their favorite version of the advertisement, as indicated in the

Final grade in Prof. Mateu's large statistic class are approximetly normally distrubuted with a mean of 76% and a SD of 8%. In prof. M's course, students who earn less than 60% in the class are assigned failing grade. What proportion of the students earned F's?

A fox population is declining by 1.8% per year. The population can be modelled using the formula P = 210(0.982)", where P is the population after n years. a) Use technology to graph this relation. b) What is the current fox population? c) What is the expected fox population in 8 years

Measure the flow rate for water of various taps using the formula "Flow rate = Volume/Time (L/min)"

2.GIVE THE FOLLOWING PARTIAL RELATIVE FREQUENCY TABLE REPUBLICANDEMOCRATINDEPENDENT MALE0.1330.1220.181 FEMALE0.1240.185? COMPUTE P(FEMALE|DEMOCRAT), AND ENTER YOUR ANSWER 3 DECIMAL PACES. YOUR ANSWER_______________

A random sample of 16 measurements is drawn from a population with a mean of 60 and standard deviation of 5.Describe the sampling distribution of y^ to lie approximately 95% of the time?

Use the following information to answer the next exercise. X ~ N (54, 8) Find the probability that x >59. (Round your answer to four decimal places.)

A system of linear inequalities is used to represent restrictions, or _____, on a function that must be maximized or minimized. Using the graph of such a system of inequalities, the maximum and minimum values of the function occur at one or more of the _____ points

How many and what type of solutions does the equation have? 2c2=16c32 Responses one rational solution one rational solution two irrational solutions two irrational solutions two nonreal solutions two nonreal solutions two rational solutions two rational solutions

After graduation, Jeri starts her engineering career at the EPA, fulfilling a childhood dream. Her first assignment is to measure an emission factor for a new propane fireplace. Remembering her favorite PSU course, ME 433, Jeri builds a flux chamber to measure the source strength of the fireplace. She measures and records the following values:

The "two state solution" was the idea of, and first proposed by

Bengisu was pregnant 272 days and 260 days for her first two pregnancies. In order for Bengisu's average pregnancy to equal a national average of 268 days, how long must her third pregnancy last? Select one: a.267 days b.251 days c.266 days d.272 days

Which of the following is an advantage of platform framing? Group of answer choices Has continuous exterior wall studs Easier to erect than balloon-frame buildings Creates less shrinkage than balloon-frame construction Uses less horizontal members

The functions P_0(A_0) and Q_0(A_0) are the zeroth-order terms in the Fourier series expansion of the periodic solution

Complete the following sentence by inserting the missing word. The process of passing a law in South Africa requires several steps, the first step starts with a ____________. A. White paper B. Green paper C. Blue paper D. Bill

28-The following is a graph of a normally distributed data set with a mean of 10 and a standard deviation of 2:

Question 4 Donated blood is tested for infectious diseases and other contaminants. Since most donated blood is safe, it saves time and money to test batches of donated blood rather than test individual samples. A certain test is performed to see if a certain toxin is present, and the entire batch is discarded if the toxin is detected. This is

Ud. esta ahorrando, a partir de hoy, un monto de $2.500 en forma mensual y deposita ese monto a una tasa compuesta del 1,5% mensual. Despus de un ao y medio, Cul es el monto que tiene disponible?: $45,000. $51,991.79 $52,974.03 $53,500 Ninguno de los anteriores

Comenzando con la fase de la gestin del tiempo del proyecto el trabajo, Araceli necesita saber las especificaciones en cuanto al personal que tendr disponible para la ejecucin de las tareas que ya fueron especificadas y enmarcadas en un diagrama de flujo para su correcto seguimiento para la realizacin del proyecto, esta actividad corresponde a la

What is the purpose of using a trigonometric substitution. What restrictions can you place on the variables involved in the three basic trigonometric substitutions to make sure the substitutions are reversible? Why would we want the substitutions to be reversible? Provide an example.

In 36 randomly selected seawater samples, the mean sodium chloride concentration was 23 cubic centimeters per cubic meter and the standard deviation was 6.7 cubic centimeters per cubic meter (cc/cm). Construct the 90% and 95% confidence intervals for the population mean.

what is the point that is on the very top of the parabola

If X = average distance in feet for 49 fly balls, then give the distribution of X . Round your standard deviation to two decimal places. X ~,. Part (b) What is the probability that the 49 balls traveled an average of less than226feet? (Round your answer to four decimal places.) Sketch the graph. Scale the horizontal axis for X . Shade the region

Suppose that 50% of all watches produced by a certain factory are defective (the other 50% are fine). A store buys a box with 400 watches produced by this factory. Assume this is a random sample from the factory. (a) Write an expression for the exact probability that at least 215 of the 400 watches are defective. (b) Approximate the probability,

please explain these, 1) If the linear correlation coefficient is -0.471, what is the value of the coefficient of determination? 0.222 -0.942 0.1942 -0.222 2) If the coefficient of determination is 0.233, what percentage of the data about the regression line is explained? 23.3% 5.43% 76.7% 46.6% 3) If the coefficient of determination is 0.822,

In a regression problem the following pairs ( x,y ) are given: (1,2), (2.5,2), (3,2), (5,2) and (5.3,2). This indicates that the: Select one: a. correlation coefficient is 0. b. correlation coefficient is 1. c. correlation coefficient is-1. d. coefficient of determination is between 0 and 1.

what are the focus coordinates for this equation: eq1: (x-1.67)^(2)=-0.6428 (y-4.34)

If you graph the feasibility region to maximize profit function, which condition would more than likely result in an alternate optimal solution? You are in the business of baking bread and cake. A loaf of bread is sold for $2 and a cake for $3. Bread takes 5 minutes and cake takes 4 minutes to bake. Bread takes 0.15 pound of flower dough and cake

Resuelve y grafica en Diagramas de Venn los siguientes conjuntos. ( Solve and graph the following sets in Venn Diagrams) U= {1,2,3,4,5,6,7,8,9,10} A= {1,3,5,6} B= {3,5,7,9}

IIf a gambler repeatedly gets on teams that were -150 moneyline, what percent of the best would the gambler have to win to profit?

Consider a Poisson input process where the arrival rate is 4/hour. Consider N1 = number of arrivals between 1pm and 3pm, N2 =number of arrivals between 2pm and 4pm. Compute the probability that N2 = 8, given that N1 = 4. Hint: N1 and N2 are not independent since they have the time window from 2pm to 3pm in common. You need to decompose the counts

Simulated Research Study #2 The Dean of a Master of Arts in Addictions Counseling (MAAC) program wants to tailor curriculum to the types of positions that graduates are likely to obtain after graduation. The three areas of interest are residential treatment facilities, community agencies, and private practice. The purpose of the study is to

CASE_1 Professor Mubin is interested in investigating factors that affect consumer satisfaction which in turn, result in their level of loyalty towards a particular mobile phone brand. He would like to know what makes a student in Universiti Utara Malaysia is constantly buy the same brand for their smartphones. Fatin, his research assistant

Diga si las funciones son inversas: f(x)= 5x - 9 X+9 9(x) = -- 5
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For the first week of June, Kevin harry s worked 33.25 hours. Kevin earns $10.70 an hour. His employer pays overtime for all hours worked in excess of 40 hours per week and pays 1.5 times the hourly rate for overtime hours. Calculate the following for the first week of June ( round your answer if necessary). 1.) regular pay amount 2.) overtime pay

What is the 99% confidence interval for a sample of 36 seat belts that have a mean length of 85.6 inches long and a population standard deviation of 2.5 inches? (84.5, 86.7) (83.1, 88.1) (80.6, 90.6) (84.4, 86.8)

Individuals seen at a large city sexually transmitted disease (STD) clinic are considered at high risk for acquiring HIV. The following data is recorded on 100 high-risk individualswho are infected with some STD, but did not have HIV, when they were seen at the clinic in1980. Their records were checked at subsequent visits to determine the time

A linear regression model outputsa class probability estimate. Select one: True False How confident are you with a classification close to the decision boundary? Select one: a.Very confident b.Reasonably confident c.Not very confident In general, if two classes are linearly separable, there is exactly one linear discriminant. Select one: True

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here is the data https://www.webassign.net/mintrostat/data/12_27/data248.dat 9. +-/2 points MIntroStat9 12.E.506.XP. My Notes . Ask Your Teache Different varieties of the tropical flower Heliconia are fertilized by different species of hummingbirds. Over time, the lengths of the flowers and the form of the hummingbirds' beaks have evolved to match
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With a range of 1-31 values that represents a population, how do I Calculate the Confidence Interval Lower? Please show work for helpful training. Confidence Interval Upper When looking at the income and debt to analyze the population in understanding if there is a correlation between debt and income, what do each of these measures mean? upper
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Maximize Q = 2xy , where x and y are positive numbers such that x + y- = 2. X = y= (Type an exact answer, using radicals as needed.)
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Question 24 The manager of a grocery store has taken a random sample of 40 customers. The average length of time it took the customers in the sample to check out was 3.1 minutes with a variance of 0.55 minutes. We want to test to determine whether or not the mean waiting time of all customers is significantly more than 3 minutes. The Excel output
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4 1 pts You are an 11th grade math teacher. You are tasked with meeting with a group of local business owners to ask them to partner with you in developing a curriculum that focuses on the math skills typically used in their businesses. What information would be beneficial to research in advance as you prepare for the meeting? O Review the

Jump to level 1 -3 0 -2 Find Q for the Q R factorization of A = 0 -10 0 , given the orthogonal vectors -1 20 1 3 -0.11 V1 0 , V3 0.65 0.33 EX: 1.23 Q = 2 3 4 Check Next
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Determine whether the vector field is conservative and, if so, find a potential function f. F(c, y, 2) = (cos z, 2y', -I sin z) f(x, y, #) = Note: if the vector field is not conservative, write "DNE"
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3. What kind of t-test would you run on this sample? Why (be specific)? (2 points)
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Optimization, Calculus. 3) A rectangular corral is being built adjacent to a river to pen in Sugar Dragons. These require at least 25 feet of fencing in each directions. (They can't fly, so fencing will be sufficient, but you guys already knew that.) The corral must be 16,200 square feet. What dimensions would minimize the length of the fencing?
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Find the center, radius, and intercepts of the circle with the given equation and then sketch the graph. x2+y2161x+4y+43:0 Select the correct choice below and fill in any answer boxes within your choice. O A. The xintercept(s) is/are _ (Use a comma to separate answers as needed. Type an exact answer, using radicals as needed ) (O B. Thereis no
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I need help with these answers please. This is a timed test \f
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Please help me answer all the questions. Practice #4 Guided Practice: Identify the two integers that the square root is between. Locate the two integers on a number line. . Locate the approximated square root on the number line between the two integers. Estimate the square root of each irrational number to the nearest tenth. Your answer must be on
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help for this? A person is walking at a rate of 6 ft per hour toward the foot of a flag pole 60 feet high. At what rate is the distance S(x) from the head of the person to the top of the pole changing when 80 ft from the bottom of the flag pole? Enter your answer as a decimal number up to 4 decimal places if necessary without units. Answer = ft/hr
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A researcher wants to determine how employee salaries (in thousands ) at a certain company are related to their length of employment (in years ).This researcher thinks that she can use length of employment to predict salary. The researcher randomly selects 8 employees and obtains the following data: A researcher wants to determine how employee
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Analiza los hechos resenados, y razona si procede o no iniciar procedimiento sancionador, calificando la posible o las posibles infracciones cometidas y la sancion o las sanciones susceptibles de ser impuestas, con pronunciamiento sobre la pretension indemnizatoria deducida. Describe, ademas, las especialidades que la Ley de Asistencia Juridica
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Use the following for questions 1 and 2 Better Dealership Number of Number of New cars Business Profit from New Identifier sales people sold each week Bureau Rating Car Sales A1 18 4 AAA $12,868.00 A2 15 13 AA $46,410.00 A3 11 4 AA $16,068.00 A4 17 9 AA $37,251.00 A5 18 4 $19,776.00 A6 13 15 AAA $59,115.00 A7 5 3 $12,381.00 A8 20 4 $15,752.00 A9 6
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A bag of 30 tulip bulbs contains 11 red tulip bulbs, 12 yellow tulip bulbs, and 7 purple tulip bulbs. Suppose two tulip bulbs are randomly selected without replacement from the bag (a) What is the probability that the two randomly selected tulip bulbs are both red? (b) What is the probability that the first bulb selected is red and the second
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Volume - Rectangular Prism ES1 A) Find the volume of each rectangular prism. 1) 2 ) 3) 17 in 7 va 16 ft 3 1 10 yo 15 in 6 yd Volume = Volume = Volume = B) Find the volume of each rectangular prism from the given parameters. 4) length = 19 in ; width = 17 in ; height = 13 in 5) height = 14 ft ; length = 11 ft ; width = 8 ft Volume = Volume = 7)
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Suppose that on the first day of every month you deposit $50 in an account which pays 6% annual interest compounded monthly.How much money will be in the account after 20 years?Assume that the last deposit generates interest for one month.

if A is singular then we can have a linear subspace of fixed points

A random sample of 15 subjects was asked to perform a given task. The time in seconds it took each of them to complete the task is recorded below: 36,28,33,50,47,47,46,35,33,34,43,29,45,40,32 If we assume that the completion times are normally distributed , find a 95% confidence interval for the true mean completion time for this task. Then

Do lash extensions cause damage to the natural lash? 2 points A) Not if they are applied properly B) Yes if natural lashes are stuck together and too much glue is used C) Yes even if they are applied properly

Please help me choose the correct answers 1 to 15. Thanks much. \f
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A sample space contains the following: S = {#, $, !, @, &, ?, +} The following events are defined: A = {$, !, @}B = {#, !, ?, +}C = {$, +}D = {#, !, &, ?} Which events are mutually exclusive?

An analyst has predicted the following returns for Stock A and Stock B is three possible states of the economy. StateProbabilityAB Boom.23 .22.22 Normal.40 .19.16 Recession??? .17.10 Calculate the expected return of Stock B. (Round your answer to 4 decimal places, and express as a percent. Do NOT include the % sign. .87643 would round to .8764.

3. LE SUPERLATIF REWRITE THE WHOLE SENTENCE Compltez en utilisant le superlatif d'un adjectif, d'un verbe, d'un adverbe ou d'un nom. ATTENTION AUX CHANGEMENTS ! Ex : L't est la saison (chaud, +) de l'anne L't est la saison LA PLUS CHAUDE de l'anne (3x5pts = 15 pts) Question 14 (3 points) Ces fichiers sont (grand, +)

Which statement is true for a continuous function f(x) on the interval [a,b]? A.f(x) is concave up or down on the interval (a,b) B.f(x) approaches a relative maximum on the interval (a,b) C.f(x) is integrable on the interval [a,b] D.f(x) is differentiable on the interval (a,b) E.none of the other answers

Find the equilibrium quantity and equilibrium price for the commodity whose supply and demand functions are given. Supply: p=q2+30q Demand: p=4q2+10q+13,500

Recently, an automobile insurance company performed a study of a random sample of 15 of its customers to determine if there is a positive relationship between the number of miles driven and the age of the driver. The sample correlation coefficient is r = .38. Given this information, which of the following is appropriate critical value for testing

Analyze and identify what is asked in the following problems. 1. How many samples of n = 3 can be selected from a population with the following sizes? a. N = 12 b. N = 16 c. N = 23 d. N = 55 2. A population consists of the five numbers 2, 3, 6, 8, and 11. Consider samples of size 2 that can be drawn from this population. a. List all the possible

A ________________'s function is to assure one party that the entity with whom it is dealing will be backed up by someone who is financially responsible

Final Exam 33 Which question would likely require a student to match objects in order to answer? A. "Are there enough snacks for each child?" B. "Is the ball in front of or behind the cup?" C. "Where is the other circle?" D. "What else would you pack to go to the swimming pool

Hi! I am a high school student struggling with related rates, MVT, and indefinite limit problems. I would really appreciate if you could explain the steps in order to reach the answer, since the answers are given, but the assignment asks for the steps of solution. These are the problems I am struggling with: If one leg AB of a right triangle

According to the February 2008 Federal Trade Commission report on consumer fraud and identity theft, 23% of all complaints in 2007 were for identity theft.In that year, Alaska had 321 complaints of identity theft out of 1,432 consumer complaints ("Consumer fraud and," 2008).Does this data provide enough evidence to show that Alaska had a lower

Use a 360-day year to answer the following problem. After working as a food broker for 8 years, Sam Hays had saved almost enough money to buy a fishing boat and move to Maine to open a charter fishing business. He still needed $55,000, which he could borrow until the end of the first fishing season. The lender charged 6.25% ordinary simple

Mr. Bonds invested $5,000 in an account with an annual interest rate of 6% compounded continuously. He used the equation below to determine how many years, t, he must leave his money in the account in order to double his investment. 10,000=5000e0.06t Which equation could be used to find the value of t? Responses ln2=0.06t ln 2 = 0.06 t log2=0.06t

10 The matrix is diagonalizable, and its diagonal form is a. b. c. d. 2 points Question 11 The reduced row echelon form for is a. b. c. d. 2 points Question 12 A linearly independent set of vectors in has at most n elements. True False 2 points Question 13 The orthogonal projection of onto the plane in spanned by is a. b. c. d. 2 points Question

Which element of phonics should be taught near the end of the instructional sequence? Question options: a) vowel digraphs b) continuous sounds c) silent e-rule d) consonant blend

Question 1 For the gas phase decomposition of phosphine at 120 .C 4 PH3 (9) - P4(9) + 6 H2(9) the following data have been obtained: [PH3], M 0.0716 0.0417 0.0243 0.0142 time, s 0 30.0 60.0 90.0 The average rate of disappearance of PH3 over the time period from t = 0 s tot = 30.0 s is M/s .For the gas phase decomposition of dimethyl ether at 500
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Find the absolute change and the relative change in the following case. The per person consumption of meat in a certain country decreased from 73.7 pounds in 2000 to 42.3 pounds in 2020.

I need help formulating both hypotheses in words and transferring them into a null and research hypothesis set. 15 out of 25 items are cheaper at Walmarts than Walgreens. 25-15=10 items cheaper at Walgreens than Walmarts. Null hypothesis in words: Hence the number of items that are cheaper at walmart than walgreens is 15? (Not sure if this is

replt to this post I truly enjoyed the lesson for this week. Most of the lesson was simple to understand and doable. Though I admit that I struggled a little bit during practice since I would simplify my responses too quickly and neglected to double verify them. Even though I watched the polynomial videos again and had some difficulty with the

You work for a women's designer apparel company based in the US that is planning to expand to the Netherlands. Your target market is young women in the age range 27-45. You conducted a survey of 241 Dutch people that satisfies this criterion. From this survey, you have the following information: average income = $48,371.25, standard deviation

A single card is drawn from a standard 52-card deck. Let C be the event that the card drawn is a club and let F be the event that the card drawn is a face card. Find the indicated probability. P(CF)=

Suppose that $5500 is placed in an account that pays 13% interest compounded each year. Assume that no withdrawals are made from the account. Follow instructions below (a) Find the amount in the account at the end of 1 year. (b) Find the amount in the account at the end of 2 years

Multiply. Use the special formula that applies. left parenthesis 3 x plus 2 y right parenthesis squared

To calculate the odds of winning a bet in a casino game, you'll need to know the number of possible outcomes that would result in a win and the total number of possible outcomes. As a very simple example, in a simple coin toss, there are two possible outcomes (heads or tails), so the odds of winning a bet on heads would be 1 in 2, or 50%.

Research ONE example of a conic section in real life and then tell us in your own words about your find. Do not just make this up off the top of your head. The St Louis Arch, for example, is NOT a parabolait is an inverted catenary. You must cite a source confirming that your example is, indeed, a conic and not some other more exotic curve.

Now, you will calculate the interest for the first payment.5In cell D8, calculate the interest for the first payment using the IPMT function. Copy the function to the range D9:D19

What factors determine the amount of interest earned on a fixed principal (such as a lump-sum deposit into an account)? Choose one A. Interest rate B. Number of compounding periods C. Frequency of periodic payments D. None of the above

A baseball player is assigned the number 15 and another one the number 25. This is an example of ________ data.

A 70 ft. ladder is mounted 10 ft above the ground on a fire truck. The bottom of the ladder is 40 ft from the wall of a building. The top of the ladder is touching the building. How high off the ground is the top of the ladder. Please show work.:)

O dilogo de Plato em que se menciona que as virtudes que se aplicam ao Estado so a sabedoria e a prudncia para a razo; fora para apetite irascvel; moderao para o concupiscvel. Pergunta 1Selecione uma opo: a. Mnon. b. A Repblica. c. Grgias. d. Crtilo

A probability experiment consist of rolling a fair 8 sided die. Find the probability of rolling a number divisible by 4

A standard deck of playing cards has 52 cards split into 4 suits of 13 ranks each.A Pinochle deck of cards consists of 48 cards split into four suits.Each suit consists of 2 cards of each of the following ranks: A, K, Q, J, 10, 9. a) Which event is more likely to occur: Five cards of the same suit are dealt to you from a standard deck, or five

give me the correct answers to these problems.

You have two options for Project 1. Download and read the attached description for each project and choose one. Option 1 - Yearly Budget In this project you will create a budget spread sheet that assists you in analyzing your financial status, set goals, make changes, whatever the case may be. Your sheet should address both regular and unexpected

Measurement Tools Fill out the table below for the major variables in the study (NOT demographic variables). You can add rows as needed, depending on how many measurement tools were used. Boxes can be expanded for more content. Name of Tool Level of Reliability Validity (Author, year) Measurement reported reported
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3. (12 points) 0f the patients of a hospital, 30% of the redheads have had skin cancer, a: 20% of the nonredheads have had skin cancer. Also, 40% of the patients are redheads. (a). What is the probability that a random patient there has had skin cancer? (Show your work! Dene any events that you use, and be clear and neat!) (b). Patient Joe has
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