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Mathematics Questions and Answers March 26, 2021

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Lindsay is going to the gym to use either a Stairmaster or a stationary bike. She would prefer the Stairmaster, but using a bike is acceptable as well. The probability of getting a Stairmaster is .20. Given that she gets the Stairmaster, the probability that she will have it for forty minutes straight is .10. Given that she gets a bike, the
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In a test of hypothesis Ho: P = .31 versus Ha: P > .31 at the 1% level of significance a sample size of 1560 produced a p-hat(sample proportion) value of .34 and a test statistic z = 2.59. The p-value (observed significance level) of the test is about-... a 0.310 b 0.005 c 0.010 d 0.350 e 0.995

FEQ21. Researchers are planning a study to compare the average grade of students in 2244 to the average grade of students in a second-year statistics course offered in the Faculty of Social Science. They conduct the following a priori power analysis. Based on this analysis they plan base their analysis on the grades of a SRS of 50 studentss from
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Using Normal Distribution to Analyze Data Martin suspects that people carry less cash with them than they used to because of credit cards and other cashless payment systems.He decides to work on inventing a new system for people to use in place of cash that would be more user friendly and safe. Martin conducted a survey to help convince investors

Question 7 There were 22 divorces in Swingtown, with a population of 21,088, in 2005.What was the divorce rate per 10,000 in Swingtown in 2005? 11.5 10.43 23.8 39.9 Question 8 If 1,788 people live in poverty in Hays, with a population of 22,458.What is Hays' poverty rate per 1,000? 28.67 .286 34,872 79.61 Question 9 Hays' population in 2010 was

There are 23 countries in North America, 12 countries in South America, 47 countries in Europe, 44 countries in Asia, 54 countries in Africa, and 14 in Oceania (Pacific Ocean region). Let A = the event that a country is in Asia. Let E = the event that a country is in Europe. Let F = the event that a country is in Africa. Let N = the event that a

Express - in terms of pandy in the following equation ! P =[ - Make I the subject of the formula 9 Jmb2 -16 ch b find the value of h when mag . Make (of the subject of the formula (9 172 - 4 b find the walls of a when beat
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What is the median of the sample values listed landing from a flight: 12 min, 8 min, 21 min, 17 min, 12 min.

evaluate the integral using the following values. x3 dx = 60, x dx = 6, dx = 2 2 1) x dx 2) x3 dx 3) 8x dx 4) 25 dx 5) (x - 9) dx
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If you expand the following (2x + 7) 2 the resulting trinomial is in the form A x 2 + B x + C State the value of A + B + C .

5 15 1. Let sin x 13 where 2
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second roll? A die is rolled twice. What is the probability of showing a 5 on the first roll and an even number on the Your answer is :The table summarizes results from 976 pedestrian deaths that were caused by automobile accidents. Driver Pedestrian Intoxicated? Intoxicated? Yes No Yes 47 77 No 228 624 If one of the pedestrian deaths is randomly
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Find the linear approximating polynomial for the following function centered at x=0. f(x)=e x+14 p 1 (x)= _____________ MAKE ANSWER IN INTERVAL NOTATION

Holding period return is thus the total return received from holding an asset or portfolio of assets over a specified period of time, generally expressed as a percentage. Holding period return is calculated on the basis of total returns from the asset or portfolio (income plus changes in value). It is particularly useful for comparing returns

A student in class is standing statically on the force plate. You look at the computer screen with your other classmates and notice that their mass is 81 kg and their right foot is 28 cm from their center of pressure and their left foot 16 cm from the their center of pressure. Find the vertical force (N) on their left leg. Please round to 1
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A physiologist believes he has discovered a new steroid hormone that can control the blood glucose in mammals.In an experiment he injects laboratory rats with a small amount of this steroid hormone and, after a suitable waiting period measures the blood glucose level of the rats. In his twelve experimental rats he obtains the following levels of

A game has an expected value to you of $500. It costs $400 to play, but if win you receive $100000( including your $400 bet) for a net gain of $99600. What is the probability of winning ?

Consider the data regarding car costs.The mean is $22,000 and the standard deviation is $2,000. 8. Not everyone pays the same price for the same model of car. Use the 68-95-99.7% Rule to find what percentage of buyers paid between $18,000 and $26,000. 9. The middle 99.7% of car costs are between what values? 10. What is the probability a car will

Please help with this calculus question 15. [-/5 Points] DETAILS LARSONET5 4.8.027. Use differentials and the graph of f to approximate the following. (Round your answers to three decimal places.) UI w N 1+ (2, 1) 2 4 5 x (a) f(1.7) ~ (b) f(2.05) ~
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Solving Quadratic Equations Solve the quadratic equation 4x2+ 4 = -8x by using the Quadratic Formula. Verify your result by graphing and using the Intersection method. Steps 1. Write the equation in Standard Form 2. Identify the coefficients a, b and c. 3. Substitute the values into the quadratic equation -b+ vb2 - 4ac * = 2a 4. Solve the equation

In an ANOVA table, the MSE is equal to 10. Random samples of six were selected from each of four populations, where the sum of squares total was 250. Develop an effect size measure for the problem above.

Question: A researcher wished to estimate the difference between the proportion of users of two shampoos who are satisfied with the product. In a sample of 400 users of Shampoo A taken by this researcher, 78 said they are satisfied. In another sample of 500 users of Shampoo B taken by the same researcher, 92 said they were satisfied. a) Construct
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True or false, log16 4 = 0.5 written as a power is 16 4 = 0.5

Literature review In this section you summarise the key literature that you have so far read and state how the ideas or findings within them have relevance to your work. The main aim is to demonstrate exactly how your research will contribute to Conversations in the field: . Compare and contrast: what are the main theories, methods, debates? . Be
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Find the equation of the curve that passes through (3,4) if its slope is given by the following equation dy/dx= 5x-7 y(x)=________

(1 point) A first order linear equation in the form y' + p(c)y = /(I) can be solved by finding an integrating factor (x) = exp ( / p(x) dx (1) Given the equation y' + 2y = 5 find A() = (2) Then find an explicit general solution with arbitrary constant C (3) Then solve the initial value problem with y(0) = 2 y=
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I am having difficulty in installing rpart.control. I keep getting the following error message > install.packages("rpart.control") WARNING: Rtools is required to build R packages but is not currently installed. Please download and install the appropriate version of Rtools before proceeding: https://cran.rstudio.com/bin/windows/Rtools/ Installing

The concept is that each slanted crack should intersect with a stirrup. By presuming the horizontal extent of the crack to be 'd', limiting the maximum distance between stirrups to 'd/2' ensures that every crack will be intersected by at least one stirrup

The following are quiz scores from a math class. The quiz was worth 10 points. 6, 7, 9, 9, 9, 10, 9, 8, 8, 1, 9, 9, 10, 7, 8, 9, 10, 9, 8 Remove the outlier from the set. Then find the mean of the 18 remaining numbers (without the outlier). Type the mean into the box, rounded to the nearest tenth
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I need help in this question 11 Assume that a procedure yields a binomial distribution with n trials and the probability of success for one trial is p. Use the given values of n and p to find the mean u and standard deviation o. Also, use the range rule of thumb to find the minimum usual value u - 20 and the maximum usual value u + 20. n = 1496, p
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C : 2 . 3 As part of an art project, Jamal made an outline of a shape with string. He wanted to create another shape inside the first one. = = a=b=1.3 3.4 m 2.5 m 21.7 2.5 m a 2.5 m 1.7 m 2.5 m 3.4 m a) Calculate the unknown side lengths of the inside shape if it is similar to the outside shape. total length of string project
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A class of 26 students contains 12 freshmen and 14 sophomores. If 6 students are chosen at random, what is the probability of choosing 3 freshmen and 3 sophomores?

Serum Glutamic-Oxaloacetic Transaminase (SGOT) is an enzyme that shows elevated activity when the heart muscle is damaged. In a study of 24 patients who underwent heart surgery, serum levels of SGOT were measured 18 hours after surgery. The mean was 48.5 U/Li and the standard deviation was 14.6 U/Li. Assume that the population of SGOT is normally

Graph the exponential function=g(x)=2x on graph the function, plot the points on the graph with x -values2, -1, 0, 1, and 2

1. A research group has only twelve petri dishes with which to conduct their first mesquite allelopathy experiment. They plan to use one or more t-tests to statistically analyze the data they generate. Which factorial design would they use if their goal is to maximize the statistical power of their t-test(s)? One point. (a) 2 x6 (c) 6 * 2 b) 3 x 4
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proves that there are only three solutions to each problem: a. For Problem A, the algebraic representation is 1 /n+1/ m= 1 /2. Using fractions, explain why it makes sense that 1 /3 +1 /6 and 1 /4 +1/ 4 are the only ways to write 1/2 as a sum of two unit fraction

The graduate division would like to predict the number of publications that they can expect from faculty, by the number of years since completing their Ph.D. They collected the following data on 7 faculty members from the University of Arizona. Please use the data below to answer the questionsthat follow. Information about variables: Variable

Which of the following would not be considered a state of nature for a business firm? A) Federal Reserve regulations B) Food and Drug Administration regulations C) the number of employees to hire D) minimum wage regulations

That is, 9 45 285 47.5 45 285 2025 325 285 2025 15333 2438 Solve the above equations with the help of Gauss elimination method, we get
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Consider a simple poll that is measuring the proportion of citizens that hold a particular political belief. What is a conservative, "worst case scenario" sample size if you want the margin of error to be 5.6%? Sample size?

1.Assume that the average length of jail in pretrial in the United States is 90 days. Use the data to perform a hypothesis test to determine if the average length of jail in pretrial in your sample is significantly different from the average length of jail in pretrial in the United States. The variable that measures the average length of jail in
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Harriet McNeil, proprietor of McNeil's Auto Mall, believes that it is good business for her automobile dealership to have more customers on the lot than can be served, as she believes this creates an impression that demand for the automobiles on her lot is high. However, she also understands that if there are far more customers on the lot than can

I need to find D1 D2 1. [0.84/25 Points] DETAILS PREVIOUS ANSWERS CAMMIMS1613.E.005. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The following payoff table shows prot for a decision analysis problem with two decision alternatives and three states of nature. States of Nature Decision Alternative 51 52 53 d1 260 110 35 d2 110 110 85 Suppose that the
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USE CLOSE DATA COLUM NUMBER ONLY.. TGT Date Open High Low Close Adj Close Volume 2017-12-01 60 60.470001 58.900002 59.509998 56.139633 8318000 2017-12-04 60.650002 . 63.029999 60.540001 62.560001 59.016903 11463100 2017-12-05 62.389999 62.48 60.450001 62.200001 58.677292 8184300 2017-12-06 61.130001 62.279999 60.549999 60.720001 57.281109 5562300
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In the game ofroulette, a player can place a $ 6 6 bet on the number 36 36 and have a StartFraction 1 Over 38 EndFraction 138 probability of winning. If the metal ball lands on 36 36 , the player gets to keep the $ 6 6 paid to play the game and the player is awarded an additional $ 210 210 . Otherwise, the player is awarded nothing and the casino

Suppose that the longevity of a light bulb is exponential with a mean lifetime of 7.6 years. Find the probability that a light bulb lasts less than three years.

Which of the following descriptions represents the transformation shown in the image? D a) From black preimage to red image. Rotation 180 degrees counterclockwise about the origin followed by a translation of 1 unit right and 2 units down. (b) From black preimage to red image. Rotation 90 degrees counterclockwise about the origin followed by a
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This is the problem about the markov chain. Question 3 (total 40 points) Aber and Byft are two competing mobile ride-sharing companies serving one million customers jointly. Suppose that each customer chooses from Aber and Byft according to the following rules: . Each customer can only choose one of the two companies in each month, and must stay
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C tax.acs.pearsonprd.tech/api/v1/print/highered New Chrome available 6. Solve the system by the method of your choice. All Bookmarks 4x = y - 5 Paper size Letter Print 4x - y =5 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The solution set is (Type an ordered pair.) B. There are infinitely
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If interest in a bank account is compounded continuously, the amount grows at a rate that is proportional to the amount present in the account. Interest that is compounded daily very closely approximates this situation. Determine the amount in an account after one year if $2000 is placed in the account and it pays 5% interest per year, compounded
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When researchers test a null hypothesis, they are looking for: Group of answer choices disconfirmatory evidence supportive data a difference between individuals misrepresentation in the sample

You are making 145 apple dumplings. Each dumpling requires 1 peeled and cored 6-ounce Granny Smith apple. The yield for small apples is 71%. Apples are purchased by the case for $18.75. Each case contains 75 apples. How many cases of apples should you purchase

Part 1:Understanding the basics A sports analyst gathers data from the 2019 major league baseball season in order to better understand how the number of home runs a team scores in a season is related to the total number of runs the team scores.For those who are not be familiar with how baseball is played, the following definitions from Wikipedia
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Please tell me if I have the wrong answer selected and how to find the correct answer. Also, please tell me what the correct answer is. Thank you so much. Question 1 (4 points) (02.05) The computer output from a set of data and a transformed set of data are below. Regression 1: Coefficients Standard Error t Stat P-value Intercept -249.8892857
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Things to do the day or night before to help you get to work on time? Group of answer choices Check the weather for the next day. Plan what to wear. Iron your clothes, if needed. Pack the things you will need. Make sure there is gas in the car, or you have money for the bus or train. If you are meeting a consumer for the first time, look at the

(4) (Jensen's inequality) Let f : B - R be a convex function (where, as usual, B C R" is a convex set). . Prove that f() _PRO;) PR f(x; ) holds for any 0 _ X(2.) PR (where we relied on the notation used in Definition 11, from the Exercise List Part I, i.e. P = _,- Pk OFF). Also notice that E(X)
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25. [-/4 Points] DETAILS MY NOTES LARCALC12 5.1.081. ASK YOUR TEACHER PRACTICE ANOTHER Verify that the function is a solution of the differential equation. Function Differential Equation y = 8 In(x) + 7 xy " + y' = 0 Find the first derivative. y ' Find the second derivative. Complete the equation. xy" + y' = x =0 Need Help? Read It Submit Answer
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help me understand the chi square test chart. I need help where it says all the points are needed. * *\\ Merge & Center * 60 30 Conditional Format Call Insert Delete Formatting as Table Styles + | X V fx| 0. 01 A B C AA 2 AB AG AND ALE` AF Chi - Square Test Is exam score independent of race ?* \\Data for you to use as input is in the picture to
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Solve the diagram for the unknown Q assuming a 6.5 % interest rate and that n is in years. Suggestion: assume that the interest is annually compounded (as always the case when not stated). Use P = F(P/F, i, n). Answer: Reasoning/Work:

QUESTION 22 . 1 POINT The graph of the polynomial f (x) is given below. If f(x) has degree 3, find the factored equation for f(x).QUESTION 25 . 1 POINT Determine the value of x that satisfies the following equation. log3 (x + 11) + log3 (x + 5) = 3\fQUESTION 28 . 1 POINT Determine the interval(s) for which the function shown below is
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Administrar la confianza: Significa crear un ambiente de apertura y confianza entr las personas

Identify the form of the following equation. y=5x Group of answer choices Slope-Intercept Form for a Linear Equation Expanded Form for a Circle Equation Point-Slope Form for a Linear Equation Standard Form for a Circle Equation Standard Form for a Linear Equation

Sam has a cleaning service. To better allocate his resources, he would like to forecast his weekly orders based on the order number he received in the past 13 weeks as shown in the following table. Using a three week moving average, Sam's forecast for his Week 14 order number is________. WeekDemand Week 111 Week 214 Week 316 Week 410 Week 515 Week

A polling organization announces that the proportion of American voters who favor congressional term limits is 64%, with a 95% confidence margin of error of 3%. If the opinion poll had announced the margin of error for 80% confidence rather than 95% confidence, this margin of error would be (a) 3%, because the same sample is used. (b) less than

cenaewr OEiEUi\\E Determine equation of a polynomial given key information Question Use the given information about the polynomial graph to write the polynomial. Write the polynomial in standard form (1:13\" + 12.17""1 + . . .. Degree: 3, Zeros at (8, 0), (4. 0), (1, 0), yintercept (0, 32). Leading coefficient is 1. Provide your answer below
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Workbook Activity 3-CA6: Name: End Behavior of the Graph of a Polynomial - Two Questions to Answer: 1. Does the graph shoot up to co or down to -co as the x values decrease (go leftward)? 2. Does the graph shoot up to co or down to -co as the x values increase (go rightward)? Four Possible End Behaviors (Unlimited polynomial graphs): Left: Up
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Use the normal distribution to find a confidence interval for a proportionp given the relevant sample results. Give the best point estimate forp , the margin of error, and the confidence interval. Assume the results come from a random sample. A99% confidence interval for p given that p^=0.8 and n=120. Round your answer for the point estimate to

Apply the operators /i d dx and d 2 dx2 to the following functions, and verify whether these functions are an eigenfunction or not: a) e iax b) e ax2 c) Z x d) cos x sin x In this case, a is a real constant and Z is the core charge

1. (7 marks) Find dy dr and in each of the following cases. (a) y = In(2 + cosx) (b) 4 -x2y = yz (c) y = sin 2t, x = cos 2t for te [0, 2x]dr
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You are a real estate agent trying to sell a house. At the beginning of each month, if the house has not yet been sold, you must advertise the house. Advertising incurs administrative costs of A dollars per month. During the month, various offers will come in from interested buyers, and at the end of the month you can choose to either sell the

19. The slope field for the system dx 1 g gt W _= ) F _f_ | | | | dt { is shown to the right. D # | | | | | | | T (a) Determine the type of the equilibrium point at the origin. (b) Calculate all straight-line solutions. (c) Plot the x(t)- and y(z)-graphs, (t > 0), for the initial conditions A = (2,1), B=(,-2),C=(-22),and D = (=2,0). | w
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1. For n = 1, we have a one-dimensional system. We represent that system graphically with on axis and one variable, . We represent positions on that line with a single number. \f\f
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The video explanation \f
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1, what's the test statistics for this hypothesis? 2, what's the P-value? 3, what's the conclusion? Thanks A data set includes data from 400 random tornadoes. The display from technology available below results from using the tornado lengths (miles) to test the claim that the mean tornado length is greater than 2.5 miles. Use a 0.05 significance
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A chemist prepares a solution of barium acetate by measuring out 231.umol of barium acetate into 500.mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in of the chemist's barium acetate solution. Round your answer to 3 significant digits.

Use the below data from 10 adults for the following two variables: --the total number of hours of television watched on a typical day, 1.) 3hrs 2.) 4hrs 3.)30 mins 4.) 45 mins 5.) 2hrs 6.) 1hr 7.) 1hr 30 mins 8.) 5hrs 9.) 2hrs 30 mins 10.) 45 mins --the total number of hours of sleep obtained in an average night. 1.) 6hrs 2.) 8hrs 3.) 9hrs 4.)

Recognize the design element for a misleading graph. Chart entitled "The Deadly Rise in Human Population". The chart plots year on the x-axis and population in billions on the y-axis. The axis is divided into equal intervals of 10 years, from 1950 to 2050. The y-axis has equal intervals of 1 billion people. Which of the following features in the

Calendar X W TrigIdentity.pdf x W InverseTrig.pdf X W Trig Transform.pdf x W TrigDefined.pdf x ) Quiz: Quiz 4 Quiz 4.pdf X Sy cos=(sqrt(2))/2 - Sin x X Mathway | Algebra X * Homework Help - C D @ File | C:/Users/aliab/Downloads/Quiz_4.pdf G Quiz 4 Name(s): Show all your work. Reasonable supporting work must be shown for any partial credit. Ruth
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: A manager is interested in studying the associations between a number of variables. These variables are age, years of experience, level of education, engagement, job satisfaction, and performance level. She thinks that employees with more years of experience are more engaged and satisfied. She thinks that younger employees will perform at a

E. Cultural Indicate whether each statement is true (Cierto) or false (Falso), based on the cultural activities in this lesson. Question 41 (0.8 points) Listen Anton Gaudi us el estilo de barroco. Question 41 options: True False Question 42 (0.8 points) Listen En La Familia Sagrada se ve el simbiosis de la naturaleza y la f catlica. Question 42

In 1915, the average household in a particular country contained more than four people. In 2007, the average was Smaller Families 2.5. Large families are increasingly rare. The graphs illustrate this trend. Complete parts (a) through (c) below. 30% 25%- 20% if all Households 15% 10%- CO/ . . . a. Use the graphs to estimate the point of
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(Refer to figure 4 for questions 22 and 23) What are you assuming when conducting this type of test? Select one: The that the two population variances are unequal. The that the two sample variances are unequal. The that the two population variances are equal. The that the two sample variances are equal. Question 23 Not yet answered Points out of
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Newborn jaundice is when a baby has a high level of bilirubin in the blood. Bilirubin is a yellow substance produced by the normal breakdown of red blood cells. We would like to estimate the mean serum bilirubin level of 4-day old infants using a sample of 150 infants. The observed sample mean for these 150 infants is 5.96 mg/100 cc. Since the

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Need help Segment AB has point A located at (8, 9). If the distance from A to B is 10 units, which of the following could be used to calculate the coordinates for point B? O 10 = (x+8)2 + (y+9)2 O 10 = (x+ 9)2 + ( y + 8)2 O 10 = (x-8)2 + (y-9)2 0 10 = (x- 9)2 + ( y-8)2
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Find all values of x so that rank{4) = 2. (Enter your answers as a comma-separatad list. If all real numbers are solutions, enter REALS.) -4 1 04 A=| 01 x 8 10 -31
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mud D lb} SupposeA = and B =[_01 0 J. 1 C2- 1 2 ii} Compute the product AB. iii) Compute the product BA. {iii} How do your answers in parts (i} and {ii} compare? Will this be true in general for any two matrices when you multiply them (assuming their dimensions line up so they can be multiplied]? If so, defend your reasoning. If not, then supply
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(a) Let u, v, w be vectors in an inner product space (V, (., .) ). Show that if u and w are not orthogonal to each other, then there is a unique a E R such that u is orthogonal to v + aw. (b) Define functions f, g, h E C[1, 3] by f(x) = x2 + 1' 9(2) = x+ h(r) = r. Find a E R such that f is orthogonal to g + ah
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3: In your own words, describe, qualitatively and quantitatively, in as much detail as necessary to persuade the instructor that you fully understand the determinants of the interest rate at initial issue of a bond which makes only coupon payments at the end of each year and then also the par amount at maturity. (This question is worth 5 points.)

The level of measurement for the dependent variable in an ANOVA should be: -interval or higher -categorial -ordinal -Nominal

Consider a large-sample level 0.01 test for testingH 0 :p= 0.2against H a : p > 0.2. For the alternative value p = 0.21, compute(0.21) for sample sizes n =3600

BEA 140 Quantitative Methods 2017 Exam University of Tasmania Question 4 A factory is using two machines to produce ball bearings. The diameter of the ball bearings produced are: 0 Old machine: diameter follows a normal distribution with mean 10.00 mm and standard deviation 0.] mm. 0 New machine: diameter follows a normal distribution with mean
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L. Planets 1S the name given to a hew boOX OI chocolates. kach box contains 18 chocolates and each chocolate is one of four types: Venus, Saturn, Jupiter and Neptune. The same number of each type is manufactured but a random process is used to fill the boxes. (a) Find the probability that a box contains no more than 7 Saturns. [2] Through online
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Sally Greene wants to estimate the approximate number of years required for a health care investment to double. The annual interest rate of the investment is 8%. Using the rule of 72, how many years will it take for the investment to double? a. 2 b. 7 c. 9 d. 14

15 Label the schematic: Area A is ___________________ Area Area B is ___________________ Area Area C is ___________________ Area Area D is ___________________ Area A. (Transition Area) B. (Termination Area) C. (Activity Area) D. (Advanced Warning Area)

equation y= 4x2 + 9y2=36 is symmetric to a. y-axis b. x-axis c. source d. All

Section 8.1 Real Numbers True/False Questions a. -9 N b. 0 9 Z c. 9 / 4 W d. is an irrational number e. 265/10000 Qf. Q Section 8.2 Significant Digits Determine the number of significant digits in each number. a. 2,600 b.0.0078 c. 110,005 d. 50.00 e. 3.30065 f.300,004,000

The simple deposit multiplier is 1 divided by the discount rate

The Accounting Number Format aligns the $ at the left side of the cell, displays ________________ places after the decimal, and aligns all numbers at the decimal point.(Select the correct answer) one two three four

Suppose the time it takes a barber to complete haircuts is uniformly distributed between 5 and 17 minutes. Let X = the time in minutes it takes a barber to complete a haircut. Then X ~ U (5, 17). Find the probability that a randomly selected barber needs at least seven minutes to complete the haircut, P(x > 7)(answer to 4 decimal places)

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