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Mathematics Questions and Answers September 10, 2021

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Problem 2 (30 pts). In the following, let A E Rmxm be a diagonal matrix with nonzero diagonal entries (1,3, and let ||H represent an arbitrary pnorm. a) What is the matrix condition number MA) relative to the matrix norm induced by \"H? Give your answer in terms of entries ai. b) We showed in class that the matrix multiplication problem b : Ax has
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the definition of modeling is a physical, mathematical, or otherwise logical representtion of a system, entity phenomenon or process

Please answer ASAP Student name 10.( 4 marks) Determine the values of k for which the function f(x) = 4x2 - 3x + 2/x + 1 has two zeros. Check these values in the original equation. 11.( 4 marks) The height of a ball thrown from a balcony can be modelled by the function b(2) - - 542 + 10r + 35, where b(z) is the height above the ground, in metres,
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What is the best answer for this? Define the binary operation * on the set of rational numbers as : a*b = ab + a - b. Compute for the value of (2*3)*4. O 13 O 24 0 9 O 21
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Find the circumcenter of EFG with E(2,6), F(2,4) and G(6,4)

What transformation will carry the isosceles trapezoid onto itself? Reflection across a diagonal line though the middle Rotation of 180 degrees Reflection across a horizontal line through the middle )Reflection across a vertical line through the middle
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2. Calculate the financial ratios tor the actual three years by using the following template. You can calculate the relevant ratios based on a 1year-end balance instead of the average beginning and ending 1year balance. See excel sheets
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This study try to find out the current satisfaction levels of a sample of students currently attending a college. (1) Explain the advantages of experiments over observational studies. (2) If a sample of students who attended Math given in previous semesters. Indicate the population the sample came from and if the sample of college courses is

Adapted from Problem 4.11 in Engineering Fundamentals and Problem Solving, 7'\" Edition by Eide A park is being considered in a space between a small river and a highway as a rest stop for travelers (see figure below). Boundary BC is perpendicular to the highway, and boundary AD makes an angle of 75 with the highway. BC is measured to be 160.0 m,
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Problem 2 (8 points): Which of the following statements are true and which not? Give a brief (1-2 sentences) justification or proof. 1. (2 points) If the feasible set of an LP is a pointed polyhedron, then the optimal solution set always includes a vertex. 2. (2 points) (0.2, 0.2, ...,0.2) is always a vertex of the polyhedron {x E R"|Ixl|
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In a multiple linear regression model with K independent variables, an F-test is applied to test for the overall fit. Under the null, A. the entire group of independent variables explains the dependent variable well. B. the entire group of independent variables is zero. C. the entire group of independent variables is unknown. D. the entire group

What is a Student t distribution? Give as much detail as possible. How does a Studentt-distribution compare with a Z-distribution? Give the necessary graph showing the types of graphs that you would encounter for these two distributions. Explain the two types of hypotheses that one usually makes and the possible errors that could be encountered.

The wind is from 030 at 15 knots and the aircraft's true airspeed is 135 knots. 18. What is the aircraft ground speed? KTS 19. How many degrees of course correction is required for the wind? L or R 20. What is the estimated time en route from Findlay to Lenawee Co? 21. The magnetic variation is 5"W. What is the magnetic heading? 22. Burning 21
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Problem 8-12 Modified Accelerated Cost Recovery System (MACRS), Listed Property, Limitation on Depreciation of Luxury Automobiles (LO 8.2, 8.4, 8.5) During 2019, Pepe Guardio purchases the following property for use in his calendar year-end manufacturing business: Item Date Acquired Cost Manufacturing equipment (7 year) June 2 $40,000 Office
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Sabrina deposits $ 1,000 in an account at the beginning of each year for 3 years. If the account pays 3 % interestannually, how much money will be inSabrina's account at the end of 3 years?

If $2,500 is invested at 12% annual interest, which is compounded continuously,what is the account balance after 3 years, assuming no additional deposits or withdrawals are made?

It would be nice to replace the additive error term T above with an relative/multiplicative error (P t[T ] m(t) i ), because the latter is always at most the former, but possibly much smaller

Prove that the set of all finite subsets of a countable set is countable this question is an exercise question to help me study.

Fast Flowing Ice. The readvance of the Ontario Lobe in a northwestward direction 13,000 years ago is an example of what? Group of answer choices Flow Switching Flow reversal A proglacial lake Deglaciation

Slope of a LINE A line of slope 3 passes through the point (7, 10). If a point of a line has an abscissa of 2, find its ordinate.

Sean makes a sketch of his parents' house and front yard. One can tell from the sketch that there is a low hedge in front of a small tree, which is in front of the house, because the hedge blocks out part of the tree's trunk and the tree blocks out part of the large picture window on the house. These aforementioned aspects of Sean's sketch

A decade - old study found that the ... A decade-old study found that the proportion, p, of high school seniors who believed that "getting rich" was an important personal goal was 75%. A researcher decides to test whether or not that percentage still stands. He finds that, among the 220 high school seniors in his random sample, 147 believe that
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solve for s in terms of p , q , r , and t pt = sqr s=?

Sec^2 x -2sec x cos x +cos^2 x=sin^2 x tan^2x. prove trigonometric identities with explanations for each step.

The Warbler House Inn offers two plans for wedding parties. Under plan A, the inn charges $40 for each person in attendance. Under plan B, the inn charges $1300 plus $30 for each person in excess of the first 30 who attend. For what size parties will plan B cost less? (Assume that more than 30 guests will attend.) Let p repressents the number of

A bug has fallen into a whirlpool and its distance from the center is given by r= theta, where zero is less than an equal to Theta and less than an equal to four pi. It is being sucked from the outside towards the center of the swirl in the whirlpool. What is the horizontal component of the bugs? MATH TRIGONOMETRY TRIGONOMETRY OLV1

Si un graphique est lim n=0+ f(x), est-ce que la limite est zro ou + infini ou n'existe pas

Suppose you have 4 different diets which you want to compare. The diets are labeled Diet A, Diet B, Diet C, and Diet D. You are interested in how the diets affect cognitive function of mice. The cognitive function is the time in seconds that it takes a mouse to run a maze. You have 20 mice available for the experiment. You will use 5 on each diet.

2) What is the difference between the "Theorem for the Sampling Distribution of Sample Means" and the "Central Limit Theorem"? It may take some time to first understand and then articulate the difference. Spend some time writing this up. . The Central Limit Theoram states that if you have a population with mean u
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1. Roxanne contributes $167.00 at the beginning of every six months into an RRSP paying interest at 8.9% compounded semi-annually. a. How much will her RRSP deposits amount to in 31.5 years? b. How much of the amount will be interest
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Determine if they are correct or incorrect. Then state arguments that support your conclusions taking into account the fundamental characteristics of rational and radical exponents. If they are incorrect, how can I help my partner avoid that mistake? Give examples and counterexamples. \f
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In the analysis of available statistical data, the ecological and reductionist fallacies have to do most clearly with which of the following issues in research? Question 11 options: 1) units of analysis 2) missing data 3) operational definitions 4) reliability

Please show the steps clearly Determine the length of x, to the nearest tenth of a centimetre. 30 409 7 cm
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1) \fGiven the equation10g3a -l 10g35 : 2, Calculate all possible integer values of a, if we know that b is also an integer. Show your reasoning process
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b. In a test of the polio vaccine, 200,000 children are given a placebo and 200,000 other children are given the Salk vaccine. Among those in the placebo group, 115 later develop polio. Among those given the Salk vaccine, 33 later develop polio
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1.The following represents data from a Asthma study among children under the age of 7. Complete the frequency table and answer the following questions. Age (years) Frequency Relative Frequency (%) Cumulative Frequency % 3 2 4 9 5 28 6 37 Total: 76 a.What percentage of children aged 4 have asthma? b.What percentage of children 5 years old and

cAN YOU EXPLAIN THIS STEP BY STEP A direct mail company wishes to estimate the proportion of people on a large mailing list that will purchase a product. Suppose the true proportion is 0.07 If 396 are sampled, what is the probability that the sample proportion will be less than 0.090.09 ? Round your answer to four decimal places.

juan escogi aleatoriamente 5 cuentas Cual es la probabilidad de que 2 de estas cuentas se encuentren sobregiradas? Media=390971 Desviacion estandar=86217,31

My weight is 175 pounds, you can make up measurements and heights of all the stairs as well as the time. I really need help i do not understand it and this is due by tonight so i would be very grateful for it to be done in a quickly manner. Thank you. and no need to worry about the paragraph I can do that. Name: K Stairs Activity Directions:
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Let's assume that there exists a 5 GB file. For all below sub-parts, assume that transfer rate is 50 MB/s and seek time is 3 milliseconds. Remember from class, seek time is the time to find the start position of Each block to read the data from. For simplicity, assume that 1GB = 1000 MB, 1 MB = 1000 KB and so on, and the complete file is stored on

WidgCo is a company that produces and sells widgets. Until recently, 7% of all widgets produced by WidgCo have been defective. The company recently concluded a project intended to improve its quality control procedures, and believes that the proportion of defective widgets produced has decreased. To confirm this, WidgCo produces 1300 widgets, of

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The graph of an exponential function has ay -intercept of7 and contains the point(4,112) . Construct the exponential function that describes the graph.

Use the z -score table to answer the question. Note: Round z -scores to the nearest hundredth and then find the required A values using the table. The weights of all the boxes of corn flakes filled by a machine are normally distributed, with a mean weight of15.5ounces and a standard deviation of 0.4 ounce. What percent of the boxes will have the

Select all that apply A random variable is said to be continuous if it Multiple select question. has a countably infinite number of values. is measured over an interval. can have decimal values. has a countable number of values

3. (20 points) Let T : R3 -+ R3 be a linear transformation such that ( 8 )- ( : ). ( :) -(4). (:)-() a. What is the standard matrix of T? b. Calculate T
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ITdNISIaLE edLT) VI wiese qudriLILduOTIS In English and UeLEMnine LIEI TULI Value 3x EZ (x+1> >) Multiple Choice O G(x): For every Integer, the number obtained by adding 1 Is greater than the Integer. (x) Is false. O Q(x): There is an Integer such that the number obtained by adding 1 to It Is greater than the Integer. Q(X) Is true. ces O (x): For
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The length of a rectangle is five times greater than the width, w. What is the ratio of the area of the rectangle to the perimeter of the rectangle in simplest form?

Completa le frasi usando il passato prossimo. Attenzione a usare la forma corretta dell'aggettivo! Questions Modello Mariano / comprare / un etto / formaggio Example answer Mariano ha comprato un etto di formaggio. End example answer Question 1 with 1 blank io / bere / troppo / acqua 1 of 1 Question 2 with 1 blank noi / mangiare / tutto / carne 1

You need to make a front elevation drawing of your house. To do this you decide to use a sheet of graph paper. The front of your house is 30 feet across and 18 feet high. What would be an appropriate scale that you should use to make the drawing? a Let each square on the graph paper represent 15 feet b Let each square of the graph paper represent

A.Sketch the graph of the standard normal distribution B.Find the x value ( ONLY 1 DECIMAL PLACES ) 11 The Probability represents the upper 15% Given the = 95 and = 8 12 The Probability represents the lower 35% Given the = 65 and = 4 13. Find the z-score that corresponds to14. Find the x-value that corresponds to x = 66, = 8.4 and = 72the mean =

Summer 2024 Math 112 Section 102 Exponential 5. Answer the following compound interest questions. (Include proper units and rounding for the final answer. Do NOT round your decimals in the middle of the solution.) (A) Maria receives a gift from her wealthy aunt. She plans to invest $150,000 in an investment account that pays 6.2% interest
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b) Choose one of your questions and answer it.It doesn't have to be a good answer (so you don't have to find the best model or justify the model), but you do have to give the answer to your question and explain how you answered it. 2. Upload hw1data.csv.These are the data depicted in Scatterplot5 in the handout from Tuesday. a) Fit 5 models.Model

Consider the following relationship, where one quantity or event causes another quantity to change. Identify the independent and dependent variable. The cost of a cab ride and the number of miles you are driven. Cost is the variable and number of miles is the variable

Th Quiz: Final Exam Question 14 of 25 Th Solve a system of linear equations by the Gauss-Jordan method given the following augmented matrix. 2 -13 8 9 13 Which row transformation would you perform first? A) R2= 812+ 1 1 B) R2 = - 8 2 + 1 1 C) R2 = 812 D) R1 = - 2 1 + 12 K 1 E) Ry = 711 O A. O B. O c. OD . O E
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(c) Write a scenario which could be modeled by this function. Do not use the scenario described in the B3 portion of the quiz. Clearly explain the meaning of cach variable you use
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3 4 5 6 7 8 9 10 X IN 5 OW g(x) 4 (a) Which of the two functions (if any) is one-to-one (i) f only (ii) g only (iii) Both f and g (iv) Neither f nor g. (b) If the domain of f(x) is [2, co), what is the range of f-(y): (i) [0, 00) (ii) [2, 00) (iii) (-00, 00) (iv) (2,00) (c) f-1 (2) =
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Give an example of an algebraic expression in baking

The annual interest on a $19,000 investment exceeds the interest earned on a $12,000 investment by $531 .The $19,000 is invested at a 0.4% higher rate of interest than the $12,000 .What is the interest rate of each investment?

-------------------- Problem 33E: Chapter: CH6 Problem: 33E A restaurant chain routinely surveys its customers. Among other questions, the survey asks each customer whether he or she would return and to rate the quality of food. Summarizing hundreds of thousands of questionnaires produced this table of joint probabilities. Rating Customer Will
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Prove that if q 2 1 is an integer then for all positive integers, n, then (1\" 1 is divisible by q 1. In other words, there is a. positive integer, An, so that qn_1=An(q_1)'
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Given P (-t0 < t < t0) = .90 with n = 18, find the appropriate t value.

Solve for x . Give answer to three decimal places where applicable. a. x = log 37 b. x = log 10 000

Solve the system using the elimination addition method: 5x + 7y - -9 5x - V = 7 The solution is (type in the x-coordinate first, then the y- coordinate)
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I need help with this question. The weight of cookies sold in the grocery store follows an approximately normal distribution, with a mean of 15 grams and a standard deviation of 1.8 grams. Determine each of the following. Ftound your response to at least 3 decimal places where appropriate. a) What is the probability that the mean weight of 13
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Unit 2 - Quadratic Functions & Equations Assignment 2023 3. Describe how you can use the characteristics of quadratic functions (i.e. not a table of values) to deterimine 4 the ordered pairs of 5 distinct points on the quadratic function with the following characteristics: Zero at X = -4 . Axis of symmetry at x = 2 Max value of 9 . Y-intercept at
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Choose a children's math app or web site. SPECIFY which math app or website you chose. Describe the specific math concepts that are being presented and taught. Answer the following questions: Are the concepts taught age-appropriate? Is the material taught in an engaging and challenging manner? What are the benefits/limitations of learning math

Most states who allow assisted death require all of the following, EXCEPT Question 2 options: Must have lived in the state for a certain amount of time. Must have less than 6 months to live Two physicians must verify the patients' end-of-life status Patients' next-of-kin must agree with the patients' choice

Full, question, nothing more is provided. Please be as clear as possible and use Probabilistic System and notice the units and significant figures please! Urgent \f
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34) From a full 50-liter container of a 40% concentration of acid, x liters is removed and replaced with 100% acid. (a) Write the amount of acid in the final mixture as a function of x. (b) Determine the domain and range of the function. (c) Determine if the final mixture is 50% acid
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Question 1 10 pts Consider the function f(t) = 1+t 0 + En-1 An cos(went) + Bn sin(went)be the Fourier series that corresponds to fe (t). Determine We / T = (decimal) and B2020 = (integer). . The Fourier coefficients An can be represented in the form An = C (So (1 + t) cos(went) dt + f, 212 cos(went) at). Determine C = (integer). . The function fo
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A choice that maximizes expected values involves: Group of answer choices multiplying values by utility adding probabilities and utilities multiplying values by probability adding values and utilities

Prove 2 or disprove it by giving a specific counterexample with a detailed explanation. You are not required to give justifications involving properties of the reals or of 2 in your proof. You must, however, show every step. Do not combine the use of more than one property within a single step. III. Prove S
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The I is the set of irrational number, not integer! \f
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Scanning through these sections and their figures may help you with your drawing and help you better understand the interactions. However, you are not required to read these sections in detail. Demonstrate the role of the bone marrow in NK cell education by completing the following sentence: If a KIR3DL1 on a developing NK cell binds to in the
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Forthe space curve below To sech , is hard ,; tank sech ) and k the bmnormal vector & and forsion Find B
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Problem 2. Let P be a point inside a triangle ABC. Let D, E, F be reflections of P in the lines BC, CA, AB. Prove that if the triangle DEF is equilateral, then the lines AD, BE, CF intersect at a common point. Hint: show that the lines AD, BE, CF are bisectors of the sides of the triangle DEF
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For this activity, consider that you are in the landscaping consultant business for a company PythagoGrass. You have landed some important clients who want some work done in their backyard. Follow the instructions to meet your client's requests. Part C Instructions Understanding: Two pillars have been delivered for the support of a shade structure

The population standard deviation for the height of college basketball players is 2.4 inches. If we want to estimate 97% confidence interval for the population mean height of these players with a 0.35margin of error, how many randomly selected players must be surveyed?

Not much is known about the use of cannabis while pregnant because for obvious reasons, expecting mothers cannot be randomly assigned to use or not use this drug while pregnant. In samples of mothers in the US who do use cannabis, the comparison is usually flawed because the samples have other important differences, namely that the mothers who use

P8-14 Evaluate the foilowing three projects, using the profitability index. Assume a cost of capital of 15 percent. Project Cash Flows Liquidate Recondition Replace Initial Cash Outow $100,000 $500,000 $1,000,000 Year 1 cash flow 50,000 100,000 500,000 Year 2 cash flow 60,000 200,000 500,000 Year 3 cash flow 75,000 250,000 500,000
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La edad promedio que tiene una persona al casarse por primera vez es de 26 aos (U:S News & World Report, 6 de junio de 1994). Suponga que las edades en el primer casamiento tienen una distribucin normal, con desviacin estndar de cuatro aos. a) Cul es la probabilidad de que una persona que se casa por primera vez tenga menos de 23 aos de edad? b)

The breaking strengths of cables produced by a certain company are approximately normally distributed. The company announced that the mean breaking strength is2100 pounds with a standard deviation of181.5 A consumer protection agency claims that the actual standard deviation is higher. Suppose that the consumer agency wants to carry out a

1 point Question at position 4 Part D: How many factors are there for 42? Enter your answer in the box. Question Blank 1 of 1 type your answer... Question at position 5 5 1 point Question at position 5 Part E: What do you notice about the number of factors of 42 and the number of arrays Brad can make with the stamps? Part E: What do you notice

2) The 9 ft wall shown here stands 30 feet from the building. Find the length of the shortest straight beam that will reach to the side of the building from the ground outside the wall. Use the methods that we learned in Calculus to solve the problem. Show all work. Building
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Question 8 of 10 An exponential decay function represents a quantity that has a decreasing halving time. O A. True O B. False SUBMIT
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Please put step by step. Screenshots displays question. 44. An opinion poll surveyed 900 people and reported that 36% believe a certain governor broke campaign financing laws in his election campaign. a. Calculate a 95% confidence interval for the population proportion of people who believe the governor broke campaign financing laws. Does the
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please don't use swamps to graph these problems on paper Algebra 2 Name ID: 1 Graphing in Vertex Form Date Period W Identify the vertex, y-intercept, and x-intercepts of each. Then sketch the graph. 1) f(x) -2x3 + 16x+24 2) /(x) - -x3 -10x-21 4. 3) f (x) - -2x2-16x-33 4) f (x) = x-9x +20 6 . 16 2 = 7
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subject: algebra Please answer the following questions. 1 - 10 please, thank you so much. (. Name the property used to justify the following statements. 1. If x 2. If v 91y then -2. 0 and p' 1, then q >q. 8. If ( - 1/3) s - 12, 9. If -8 : > 24, then ?
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Find the coordinates of the corners A, B, C, D of the top square, as well as the coordinates of the points A0 , B0 , C0 , D0 at which four edges of the cube meet the ground. And here A is supposed to be connected to A0 by such an edge, and similarly for B and B0 , C and C 0 , and D and D0 . Here are a few clues to get you started: The ground

Consider the following argument: If fifty mathematicians accept the proof of this conjecture, it is an irrefutable certainty. This conjecture is not an irrefutable certainty. So, it is not true that fifty mathematicians accept its proof. This argument is: valid invalid true false None of the above

B. Perform analysis to evaluate the association of sex with smoking status. I. Perform a chi-square test of independence to assess whether there is an association between sex and smoking status. (10 points) II. What proportion of males and what proportion of females were identified to be current smokers in this survey? (10 points) III. Overall, is

Pat is the manager of a real estate group that is part of a larger real estate company. Here are the total number of home sales from 2019 for all the agents at the entire company. 15,20,3,5,6,8,9,10,10,4,5,6,9,4,3,14,2,5,8 Pat wants to know if her own real estate group, which has 4 agents (the sample, in this case), has sold more homes than the

A medical test is given to 1000 people, 56% of whom have diabetes. The test has a false positive rate of 11% and a false negative rate of 5%.What is the probability that someone who tests negative does not have diabetes? Give your answer to two decimal places.

Just PA= LU (a) Find permutation matrices P and Q and a unit lower triangular matrix L and an upper triangular matrix U such that PA = LU and PAQ = LU for each of the following matrices. 100 99 98 () A = (ii) A = 98 55 11 0 1 0.00003 1.566 1.234 (iii) A = 1.5660 2.000 1.018 1.2340 1.018 -3.000 (v) A of the form (5.7) with n = 5
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If a car gets 25 miles to the gallon on average, how many gallons of gasoline would be burned when that car travels 255 miles? Round you answer to the nearest tenth

The number of arrivals per minute at a bank located in the central business district of a large city was recorded over a period of 200minutes, with the results shown in the table below. Complete(a) through(c) to the right. Arrivals Frequency Arrivals - Frequency 0 30 1 56 2 37 3 31 4 20 5 15 6 7 7 3 8 1 a. Compute the expected number of arrivals

Question 1 Tries remaining: 2 Marked out of 1.00 \\ Flag question Carry out the following calculation following the BIDMAS rules and round your answer to two significant figures. 19 - (24 - 58) x 3 Answer:Question 2 Tries remaining: 3 Marked out of 1.00 F Flag question A 25.8 cm long piece of elastic is stretched to a new length of 34.6 cm.
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Similar Triangles Worksheet (1 of 2) Write themale declared values for * for the pairs of similar triangles below, 11 X 9 cm 8 cm = 18 - 20x O 5 cm * cm x cm 2 cm = 280 - 5x = 2 7.5 cm X - S X = x cm X -6 6.4 cm 12 cm - 1 x cm 6 cm X 15 cm LIVE V
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