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Mathematics Questions and Answers March 26, 2021

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The following are the annual salaries of20 chief executive officers of major companies. (The salaries are written in thousands of dollars.) 743,767,542,248,315,609,519,633,452,814,428,338,495,224,723,204,653,790,586,84 Send data to Excel Find25 th and90 th percentilesfor these salaries. (If necessary, consult alist of formulas.) (a)The25 th

Vertical banded gastroplasty is a surgical procedure that reduces the volume of the stomach in order to produce weight loss. In a recent study, 82 patients with Type 2 diabetes underwent this procedure, and 59 of them experienced a recovery from diabetes. Does this study provide convincing evidence that more than 60% of those with diabetes who

Xfollows a normal distribution with mean of1112.5 1112.5and variance of144.2 Standardize an Xvalue of 1000. It is known that the body mass index (BMI) of healthy American females follows a normal distribution with mean22.5 and standard deviation3.0 About what percentage of female BMI values fall between16.5and28.5 ? Assume is a standard normal

Express this formula is simplified negation normal form. You can either answer the questions in the textbox below or cut and paste the questions into a word document and upload it here. To earn even partial credit on this assignment you must explain (i.e. name the equivalence and explain how/why you're using it) each step that you use to get the

I need help with the following homework question. Suppose that P(x i =1)=P i =1 - P(x i =0), i = 1, 2 If P 1 >=P 2 , show that x 1 >= st x 2

An analyst is using a 3-period moving average to forecast the number of widgets needed for the fourth quarter. Using the data shown in the following table, what is the forecasted amount? Quarter Widgets 1 44 2 31 3 37 4 38 1 42 2 36 3 41 4 ? 35 37 39 40

sta actividad tiene como objetivo elaborar un ensayo argumentativo, aplicando los conceptos estudiados en este mdulo. Profundice sobre el tema de las fallas del mercado de la salud, discutido en el mdulo, respondiendo al siguiente planteamiento: Explique cmo se puede utilizar la falla del mercado de la salud para justificar la intervencin del

Question 6 V ABE Int. has 1,950,000 shares of common stock and 100,000 share of cumulative preferred stock. The annual dividend on the preferred stock is $3.50 per share and no dividends were paid last year. This year the board of directors decide to distribute 3,200,000 in dividends. How much will you get in dividends if you own 300 shares of the
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The random variables X and Y are distributed according to the joint PDF f X , Y ( x , y )={ ax^ 2 if1 x 2and0 y x , 0 otherwise Find the constant a Determine the marginal PDF fY ( y ) a. If 0 y 1 b. if 1 < y 2 Determine the conditional expectation of 1/(( X^ 2)*Y), given that Y =5/4 I do not need the answer but hints. I already answered question 1.

Lisa takes a 10-year mortgage for $300,000 at 6.75% p.a. It is to be repaid monthly. a) Assume the interest is compounded monthly. What is the monthly repayment amount? The monthly repayment amount is $Answer(round to 2 decimal places). b) What is the balance outstanding after two years? How much principal and how much interest has she paid? The

For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. In a random sample of 65 professional actors, it was found that 44 were extroverts. (a) Let p represent the proportion of all actors who are extroverts. Find a point estimate for p . (Round your answer to four decimal

If you decided to make the critical p-value or alpha for significance as 0.001 as opposed to the conventional 0.05, what would the consequences be? Group of answer choices There would be fewer instances when the null hypothesis would be rejected You would be more likely to make a Type II error All of the answers You would be less likely to make a

Please help me with this problem and needed urgently please needed correct answer please 3 2 Iny (1 point) Evaluate dy dx. Ji xy Answer: Submit
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Can you help me with this Statistics question? 3.2) Which of the following are statistics, and which are parameters? (a) The mean height of a sample of basketball players in the National Basketball Association (b) The mean weight of the population of football player on the Washington Redskins team (c) The mean blood pressure of the population of

I really need help to understand this problem before the exam comes up. So, I thought I was supposed to make a graph that the assignment connects to another assignment like I thought French is number 1, Math is number 2, etc... But it is not that I was told. After creating the graph, I have to find which point has the most vertical line and it can
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PLEASE HELP ASAP 6-8 ALL THE INFO IS HERE - Scores on the but Graduate Record Examination; are considered to be normally distributed . The average quint it * the portion of the GRE for 2014 was $ 151 with standard deviation ?` 7. Draw this distribution . 6. Obtain the area under the curve for & GRE SCORE of 140 . [ . _LIMEn't down What Is the
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= O WEEK 3: RADICALS AND RATIONAL EXPONENTS Converting between radical form and exponent form Write the following as a radical expression. 6 10 X 5
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Differential Geometry - Please solve with clear procedure. Thank you 4. The coordinates in space of a point whose longitude is 0, and whose reduced latitude is B are (a cos B, 0, bsin B). Find, with justification, an expression for these coordinates in terms of geodetic latitude o
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Are events independent or not? Am I on the right path? Let A, B, and C be events associated with the same probabilistic model (i.e., subsets of a common sample space), and assume that P (C) > 0. For each one of the following statements, decide whether the statement is True (always true), or False (not always true). 1. Suppose that A C C. Then, P(A
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QA- The following table represents gas well completions during 1986 in North and South America. Source: American Gas Association, 1987 Gas Facts, p. 50 D D' Dry Not Dry N North America 14,131 31,575 45,706 N' South America 404 2,563 2,967 14,535 34138 48,673 Draw a Venn diagram that summarizes the information in the table. a.Identify the region of

Draw a line perpendicular to the line that contains the points (1, 4) and (4, 2) and passes through the point (2, 8).

Set up an integral in spherical coordinates to find the volume of the smaller region cut from the solid sphere 8 by the plane z = 5

Random assignment is useful for finding evidence of a causal relationship. Group of answer choices True False

Write the equation of the circle in standard form . Then identify the center and radius. 2 taxty - 14y + 43 = 0
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a dice game costs $5 to play. you throw one die. if you roll a 6, you get$18 if you roll a 2 or 4 you get $6. find your expectation for this game

Complete the table and predict the limit, if it exists. (Round your answers to three decimal places. If the limit is infinite, enter '' or '-', as appropriate. If the limit does not otherwise exist, enter DNE.) f ( x ) = 5 x 1 for x < 1 93 x x 2 for x 1 x f ( x ) 0.9 0.99 0.999 1.001 1.01 1.1 lim x 1 f ( x )=

Real estate analystsare also increasingly calculatinga REIT's adjusted funds from operations (AFFO). This calculation takes a REIT's FFO and subtracts any recurring expenditure that is capitalized and then amortized, as well as any straight-lining of rents. These recurring capital expenditures may include such maintenance expenses as painting

A department store will place a sale item in a special display for a one-day sale. Previous experience suggests that 15 percent of all customers who pass such a special display will purchase the item. If 2,327 customers will pass the display on the day of the sale, and if a one-item-per-customer limit is placed on the sale item, how many units of

Question: 1.Researchers are interested in estimating the prevalence of smoking in college campuses. . Suppose the population prevalence is 25% and the research team has enrolled 300 current college students in their study, a.can we approximate with the normal distribution in this hypothetical example? Why or why not? b.What is the mean number of

In a lottery game, you choose 6 numbers between 1 and 48. Six numbers are selected at random, and if you have chosen all 6 numbers, then you win the jackpot! Discuss the following questions with the members of your group: To play this lottery game, I chose the numbers 1, 2, 3, 4, 5, and 6. What do you think about that choice? How unlikely do you

1. What price do farmers get for their watermelon crops? In the third week of July, a random sample of 41 farming regions gave a sample mean of= $6.88per 100 pounds of watermelon. Assume that is known to be $1.90 per 100 pounds. (a)Find a 90% confidence interval for the population mean price (per 100 pounds) that farmers in this region get for

\fQuestion 2 1 pts Solve and graph the inequality. Give answer in interval notation. -3x - 2 > -4x + 10 O (-60, 8) 6 7 10 11 12 O (12, co) 8 9 10 11 12 13 14 15 16 17 O (-60, 12) 7 8 9 10 11 12 13 14 15 16 17 O (8, 00) 3 4 38 7 2 9 10 11 12 13D Question 3 1 pts Solve the quadratic inequality. Write the solution set in interval notation. x2 - 6x +
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The objective function is z=4x+5y. A. Find the value of the objective function at each corner of the graphed region. B. Find the maximum value of the objective function. C. Find the minimum value of the objective function. \f
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please help me! The Wall Street Joumal provides the net asset value, the year-to-date percent return, and the three-year percent return for 748 mutual funds.'r Assume that a simple random sample of 12 of the 748 mutual funds will be selected for a follow- up study on the size and performance of mutual funds. Use the third column of the table of
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Please answer a b and c Based on data from Hurricane Katrina, the function defined by w (x) = -1.13x +930 gives the wind speed w(x)(in mph) based on the barometric pressure x (in millibars, mb). (a) Approximate the wind speed for a hurricane with a barometric pressure of 600 mb. (b) Write a function representing the inverse of w and interpret its
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> : . b 1 Oswaldo is cooking a big dinner. He buys 30 ounces of sweet potatoes, 1 13 -4 ounces of asparagus anf 20 ounces of squash. How many ounces of vegetables did Oswaldo buy altogether? ounces Convert the number of ounces to pounds. How many pounds of vegetables did Oswaldo buy altogether? pounds
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In a random survey of 3,015 boys age 11, the average height was 146 cm, and the standard deviation (SD) was 8 cm. A histogram suggested the heights were approximately normally distributed. Fill in the blanks. a. One boy was 170 cm tall. He was above average by __________ SDs. b. Another boy was 148 cm tall. He was above average by __________ SDs.

R2. Babies : A sample of 25 one-year-old girls had a mean weight of 24.1 pounds with a standard deviation of .4.3 pounds. Assume that the population of weights is normally distributed. A pediatrician claims that the standard deviation of the weights of one-year-old girls is less than 6 pounds. Do the data provide convincing evidence that the

A random sample of 30 KPU students were asked how many hours they spend on Facebook per week. The data reported from this sample are available in worksheet 1 of the Excel data file. Based on this sample data, provide the point estimate of the population mean. Round final answer to two decimal places (e.g., 0.00)

Reasoning A cone with radius 4 and height 9 has its radius tripled. How many times greater is the volume of the larger cone than the smaller cone? Use pencil and paper. Explain how the volume of the cone would change if the radius were divided by three. The volume of the larger cone is times greater than the volume of the smaller cone
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This is my study guide for my exam. I have the answer key, but I need to see how steps 10 through 18 are solved. I do not understand how to solve them, so I need to see them completed step by step please and thanks. Use integration by parts to find the integral. Round the answer to two decimal places if necessary. 10) S 8x In x dx 11) f (x -
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Need help to follow Espanol A car dealership decreased the price of a certain car by 4%. The original price was $46,500. (a) Fill in the blank to write the new price in terms of the original price. Write your answer as a decimal. New price - x Original price (b) Use your answer in part (a) to determine the new price. New price: $
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Consider the following. T is the clockwise rotation ( is negative) of 60 in R2, v = (1, 6). (a) Find the standard matrix A for the linear transformation T. A = (b) Use A to find the image of the vector v. T(v) = (c) Sketch the graph of v and its image

Use the following contingency table to complete (A) _ A B C Total 1 15 35 40 90 2 45 50 55 150 A) Compute the expected frequencies for each as well

Convert the following DFA to a regular expression. That is, what is a regular expression for the language accepted by this machine? Remove states in the following order: state C, then B, then D, then finally A. At each removal of a state, draw the relevant diagram, showing the regular expression that transition from state to state. For example,
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Assume that when human resource managers are randomly selected, 46% say job applicants should follow up within two weeks. If 8 human resource managers are randomly selected, find the probabitty that exactly 3 of them say job applicants should follow up within two weeks

Solve the exponential equation for t. You may use either the common logarithm or the natural logarithm. (Round your answer to two decimal places.) 4 5t = 22

WHAT IS DIFFERENCE BETWEEN ORDINARY LEAST SQUARES AND QUANTILE REGRESSION?

When a transversal intersects two parallel lines, several pairs of angles are formed with distinct relationships. Corresponding angles are found on the same side of the transversal in matching positions and are congruent, such as 1 and 5. Alternate interior angles, like 3 and 6, lie on opposite sides of the transversal but inside the parallel

On a city map, a rectangular park has a length of 3 in. If the actual length and width of the park are 500ft and 200ft, respectively, how wide is the park on the map?

3.4.3 Practice: Working with Trigonometric Functions Precalculus Sem 2 Name: A Date: 3 Answer the following questions using what you've learned fro responses in the space provided. 1. What is the domain and range of y = cost? (1 point) Domain s All real mumml

The normal distribution can be used to approximate the sampling distribution of the sample proportion with a probability of success 0.88 if the sample size is greater than or equal to (4 decimal places). Step by step please, no excel.

A farmer, well versed in traditional optimization problems, has decided to buy a rectangular plot of 200 square meters of land on the bank of a river, and surround it on three sides by a fence. The side facing the river, will, of course, remain unfenced. What are the dimensions of the plot of land that can be surrounded by the minimum possible

how can this model be used to determine 2.3-0.26 the model shows a total of 2 wholes and 3 tenths. After regrouping 1 tenth into 10 hundredths, there are 2 wholes, 2 tenths, and 10 hundreths. After crossing out 2 tenths and 6 hundredths, there are 2 wholes

Objective: To understand the issues (conflicts of interests) between North and South that led to the Civil War Directions: 1) Write, draw, and color the causes of the Civil War. 2) Choose a partner. One of you will be A (a southerner) and one of you will be B (a northerner). On each issue. A: explain your position: B repeat A's position to his or
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Off ( x ) =/x+2 OB. f ( x ) =2x - 3 of ( x ) = 2x + 3 OD. f ( x ) = x- 2 ( Moving to another question w
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4. A reeemmendetien as to whether Beaehen eheuld employ CMRC, along with the value ef the infermetien mew-ried by the research rm and the eeienev ef this infermatien
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Construct a 95% confidence interval for B1 if B1 = 31, s=3, SS xx =35, and n=10 A. 31 + 1.13 B. 62 + 1.36 C. 31 + .92 D. 36 + 1.84

Please help. Thank you Use a compass and a ruler or geometry software to construct an obtuse triangle. Label the vertices. Choose two sides and construct the midpoint of each side; then label and draw the midsegment. Describe the relationship between the length of the midsegment and the length of the third side. The vertices of A WXY are W(-4, 1),
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Solve pls 10. [10.27 Points] BBUNDERSTAT125.4.029. In western Kansas, the summer density of hailstorms is estimated at about 2.0 storms per 5 square miles. In most cases, a hailstorm damages only a relatively small area in a square mile. A crop insurance company has insured a tract of 4 square miles of Kansas wheat land against hail damage. Let r
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Please help me out this problem 7. Do the Average score of a mathematics aptitude test differ by school region? Data were collected from 3 schools from Newton Middle School, Lancaster Middle School, and Fitchburg Middle School. The results of the analysis are given below: 2 or
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The sales comparison approach is being used to obtain an indication of the market value of a single family residence.The subject property is compared to the four properties that sold during the past year in the same neighborhood. Relevant characteristics of the subject and the comparables are presented below. Subject: current sale, waterfront, 1

you are comparing two banks. One bank is online and offers a savings account interest rate of 1.76% compounded quarterly. One bank is in your hometown and offers a savings account interest rate of 1.72% compounded daily. You have $6000 to keep in a savings account for 5 years, so you need to decide which bank would pay more interest. The online

Help. And explain simply please. Starting with a 80-footlong stone wall, a farmer would like to construct a rectangular enclosure by adding 640 feet of fencing, as shown in the figure to the right. = 'b Find the values of x and w that result in the greatest possible area. w i - 1M' L
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If a player rolls 2 dice and gets n sum of 3, or 11 the player collects $15. If a player gets a sum of 12 the player collects $13. The get to play the game is $2. Let c+1 be the net money gained (I.e. money collected to play - (cost to play) by the player -construct the probability distribution of the random variable (x). -find the expected net

The figure shows that a bicyclist tips the cycle when making a tum. The angle, B, formed by the vertical direction and the bicycle, is called the banking angle. The banking angle varies inversely as the cycle's turning radius. When the turning radius is 4.2 feet, the banking angle is 54. What is the banking angle when the turning radius is 6.3 feet
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a rectangular. garden has a width that is 5 feet less than twice the length. Find the width and the length if the length id the perimeter is 17 feet

Consider the Bayesian network shown below. A.)Apply variable elimination to compute the marginal probabilities of: (1) Variable F: p(F) (2) Variable G: p(G) (3) The variables C and G jointly: p(C, G). For each part, report the elimination order used, along with the schematic computation of each bucket (e.g., which functions are collected together
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In Miss Mofokeng's classroom, it's circle time in the morning; the discussion is based on the theme of the week; "feelings". Miss Mofokeng asks each child to pick out a face from the container full of cardboard cutout emojis that show how they feel that morning. The emojis show the following expressions: sad, happy, tired, excited, and worried.

1 cup of brown sugar weighs 7.05 oz. How many full cups can you get out of a 5 pound bag? ___ full cups. (Only enter a number.)

How many different spanning trees does Cn have? Count different trees as different even if they are isomorphic.

Bloomberg Personal Finance (julio/agosto de 2001) incluye las empresas siguientes en el portafolio de las inversiones que recomienda. A continuacin se presentan las cantidades en dlares que se asignan a cada accin en un portafolio con valor de $25 000. Empresa Portafolio Tasa de crecimiento estimado rendimiento de dividendos $ % % Citigroup 3000

What is the precentage of children in special education identified with autism during the 2019-2020 school year? 5.8% 9% O 11% O 13%

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1.You have 6 sweaters and 7 pants. How many possible pairings can you have? 2.In a company, ID cards have 5 digit numbers. a. How many ID cards can be formed if repetition of the digit is allowed? b. How many ID cards can be formed if repetition of the digit is not allowed? 3.Using the digits 1, 2, 3 and 5, how many 4 digit numbers can be formed

A statistics practitioner took a random sample of 50 observations from a population with a standard deviation of 25 and computed the sample mean to be 100. Estimate the population mean with 90% confidence.

Answer within 10 minutes Consider the data to the right from two independent samples. Construct a 95% confidence interval to estimate the difference in population means. X1 = 44 X2 = 51 Click here to view page 1 of the standard normal table. Click here to view page 2 of the standard normal table. 01 =9 62 = 12 n1 = 31 02 = 39 The confidence
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Find the area of the region bound by.... y^2 = x y = x - 2 Given Points (4, 2) and (1, -1) a) 2 2/3 b) 5 1/6 c) 5 1/2 d) 4 1/2

The points open parentheses negative 3 comma 6 close parentheses, open parentheses 0 comma 3 close parentheses and open parentheses 3 comma 9 close parentheses lie on the graph of a third degree polynomial function P. If the equation of P open parentheses x close parentheses is divided by x minus 3, then the remainder is

Exercise 2: What is the critical F value for a sample of four observations in the numerator and seven in the denominator? Use a one-tailed test and the .01 significance level. Fo =
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Compute the expected value for X. Compute the correlation between X and Y. \f
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About 20% of police officers in NJ have Master's degree. (4 points) a. If we select one police officer, what is the probability that he or she has a Master's degree? b. If we select three police officers, what is the probability that all three police officers have Master's degrees? 3a. The amount of time spent in prison by convicts in the US has

Probability question Problem 6. (1 point) A Canadian male has recently had a Prostate Specific Antigen (PSA) test as to determine if he has prostate cancer. The false-positive rate of a PSA test is 14%. If he does have prostate cancer, PSA test will be positive 79% of the time. Because this male is showing symptoms that are consistent with
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A researcher measures the relationship between sleep medication use A researcher measures the relationship between sleep medication use (times used per week) and time spent working (in hours per week). Answer the following questions based on the results provided. Sleep Medication Use Time Spent Working 11 16 6 37 8 18 4 30 Part (a) Compute the
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Help me please A cell phone carrier charges a fixed monthly fee plus a constant rate for each minute used. Part 1. In January, the total cost for 250 minutes was $60 while in February, the total cost for 350 minutes was $64. The constant charge for each minute used is: 0.06 0.05 0.04 Part 2. The fixed montly fee charged by the carrier is; fee = $
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a. In a drug test administered to n athletes at an Olympic games, the number who tested positive for a banned substance is X. We wish estimate, using (X), the unknown probability p, that a randomly chosen athlete at the games will test positive for a banned substance. How large should n be so that with probability 0.95, the estimate will be in
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Please help Suppose the lengths of human pregnancies are normally distributed with u = 266 days and o = 16 days. Complete parts (a) and (b) below. (a) The figure to the right represents the normal curve with u = 266 days and o = 16 days. The area to the left of X = 245 is 0.0947. Provide two interpretations of this area. Provide one interpretation
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14. Four runners were randomly sampled and it was found they ran 8, 10, 10, and 12 miles per week.Assuming the population is normally distributed, if we wish to test the claim that the mean running distance is at least 14 miles per week, what conclusion would you reach at the 5% level of significance?Show all the steps of hypothesis testing.You

How can you tell if a piecewise function is continuous or discontinuous? Is it if the holes are not filled in the same exact coordinates of different functions? Is it also if the functions don't go on forever?

Create a formula for a function f(a) that has f(5) = 8. Do not give a simple constant function (like f(x) = 8) as your answer. f(z ) Submit Question Jump to
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HW2.2. First Order Linear Equation Find the general solution to the first order linear differential equation dy/dt +2y=cos(2t) Please use A to denote the constant of integration. Recall that e11t can be represented as exp(11*t) or as e^(11*t). Click the question mark in the answer panel for more information.

A study was conducted that measured the total brain volume (TBV) (in ) of patients that had schizophrenia and patients that are considered normal.Table A contains the TBV of the normal patients and table B contains the TBV of schizophrenia patients.Compute a 99% confidence interval for the difference in TBV of normal patients and patients with
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creating a proof using statment/reason \f12. Given: AFDC AB L BC, DE LEF BC|| FE, AF = CD Prove: AB = ED C 13. Given: E is the midpoint of DB ZACD = -CAB Prove: ADEC =BEA B A
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PLEASE HELP, APPRICIATE IT! Consider the set of planes in the figure N = arrow sign a) Construct a set of equations from the right side reunajanojen the range of 0 x 1. b) Calculate the y-coordinate of the center of the set N.

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Linear Algebra: Question 1. Consider the matrix (a) Find A-l. (b) Solve the system (c) Write the matrix as a linear combination of the matrices 3 2 7 3 1 4 A: 2 3 8 7 1 3 3x + y 42 = 10 23: 3g + 82 = 3 Tm+y+32 = 14 10 3 14 L H M
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T:test A researcher is interested in studying whether sleep deprivation leads to increased reaction times (i.e., being slower) when driving. The researcher randomly selects a sample of 30 licensed drivers. Fifteen participants are randomly assigned to get 5 hours of sleep for three consecutive nights. The other 15 participants are randomly

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