S
  1. study help
  2. subject categories
  3. sciences
  4. mathematics
  5. september 2021
  6. 20

Mathematics Questions and Answers September 20, 2021

Expert-verified solutions to help you succeed

ndependent random sampling from two normally distributed populations gives the results below. Find a 90% confidence interval estimate of the diffrence between the means of the two populations nx= 62 x= 379 s(d) of x = 15 ny= 30 y=350 s(d) of y= 28 show formulas in excel

Among250 cellphone owners aged 18-24 surveyed, 108 said their was on android phone. Construct a99.8% confidence interval for the proportion of cell phone owners 18-24 who have an android phone. Round the answers to at least three decimal places. A 99.8% confidence interval for the proportion of cell phone owners aged 18-24 who have an Android

In a normal distribution of scores with a mean of 1700 and a standard deviation of 275, what raw score corresponds to the 80thpercentile?

only for 28 please 28. Determine the equation of the tangent to the curve y = at r = 1. 29. In a research laboratory, a dish of bacteria is infected with a particular
image text in transcribed

Hello, so tomorrow I have ENG4C test, can you give me the final test

2. Express each equation in function notation as a linear function in two variables. The form of standard notation is indicated in each case. f(x )= -3/4x + 1

Concerns about climate change and CO2 reduction have initated the commercial production of biodiesel{from renewable resources} and petrodiesel from {fossil fuel. Random samples of 38 fuel are tested in a lab to ascertain the bio-total carbon ratio. If the true mean is .9350 with a standard deviation of 0.0090 within what interval will 90 percent

You intend to estimate a population mean with the following sample. 45.3,42.3,53,49,15.2,52.3,45.6,39.6,39.4,16.1,54.4 You believe the population is normally distributed. Find the 99.9% confidence interval. Enter your answer as an open-interval ( i.e. , parentheses) accurate to twp decimal places (because the sample data are reported accurate to

2) Solve the given initial value problem (1+ x2) dy dx + 2xy = f(x) , y(0) =0 sx, 0
image text in transcribed

1. El Banco del Sur, SA, paga el 4% sobre los depositos a plazo, Cual es el pago anual? por interes simple sobre un deposito de Q. 250,000.00
image text in transcribed

Practice Quiz (8 points) Make a sketch of fon [a,b] . Then use the geometric interpretation of the integral to evaluate it: V4 - x2 dx DO NOT use integration methods
image text in transcribed

1.A researcher plans a study whereby she will compute three statistical tests: a Pearson r, a paired samples t-test, and multiple regression. She performs a power analysis based on an anticipated R 2 and enrolls the required number of participants based on the results of that power analysis, states that the study has adequate statistical power,

Show the work Page 1 > of 4 C) 3. Given the 5 scores in previous problem, What score would you need on Quiz 6 to earn an 80% for the 6 quizzes? Q6 Score = % 4. If you require 36 yards of material, how many inches would that be? NOTE: 1 foot: 3 yards; 1 foot = 12 inches Answer: ' inches 5. GIVEN: .05x - .25 = .12x - .74; Solve for x=
image text in transcribed

02. Given that there are two distinct complex numbers 2 that satisfy {::|"3'i = 22-} ,F. {:2 argi': 2') = 3%} determine the exact range of values for the real constant r. (Total for question = 7 marks)
image text in transcribed

Michael plays 1/5 of a song in 1/15 of a minute. How much time will it take him to play 27 songs?

How is the fundamental theorem used in the real world? Provide an example

Divide. Write your answer in fraction form. 21) (x- 3x4-2x - 9x2-19x-14) + (x+ 1) A) x1 -4x +2x2 - 1 1x-8- 4 8 B) x4-48 +2x2 - 11x -8- x+ 1 x+ 1 x - 4x + 2x2 - 11x -8+ 4 6 D) X' - 4x) + 2x2 - 1 1x -8- * + 1
image text in transcribed

Calculate your mean and your median walking time for the 10 months. 125, 139, 149, 150, 159, 167, 178, 210, 245, 278

You are given the following parameters for a project. There is an opportunity to upload your work in the second question. A t' t Immediate c 1V1 y Duration Predecessors Question 39 (5 points) What is the critical path for the project? Use capital letters and no spaces. i.e
image text in transcribed

Can you justify the targeting of Starbuck's segmentation by using multiple segmentation variables from multiple segmentation bases for each segment. the segmentation is demographics. please cite for me

Recommended daily intake of water from beverages is Blank______ for women and Bl______ are inorganic elements that the body needs in relatively small amounts to aid in numerous body functions.ank______ for men. Multiple choice question. six cups; 10 cups eight cups; eight cups nine cups; 13 cups 10 cups; 15 cups

Given two vectors A and B , which of the following is the correct method for adding A and B ? Select one: a. Move A parallel to itself placing the tail of A at the tail of B , and then draw a vector from the tip of B to the tail of A . b. Move B parallel to itself placing the tail of B at the tip of A , and then draw a vector from the tail of A to

Please help me (15 pts) 2. (a) Use cross product to find the area of the triangle with vertices A = (1, 3, 2), B = (2, 1,0) and C = (1,0, -2). (b) Find a normal vector to the plane that contains the points E = (1, 2, 2), F = (2, 1,0) and G = (3, 1, -2), and then find an equation of the plane
image text in transcribed

Find the first quartile (Q 1 ), the second quartile (Q 2 ), the third quartile (Q 3 ) and interquartile range IQR (Q 3 - Q 1 ) of the following data set. Additionally, draw the boxandwhiskers plot (vertically) 2, 10, 12, 21, 13, 18, 15, 16, 18, 13, 19, 19, 12, 20, 35

i need help mary ellen invests $4,000 in an account that earns 1.8% annual interest compound monthly. How many years will it take for the balance of this account to reach$ 6,000? enter your answer in the box. round your answer to the nearest tenth of a year.

Dadas las siguientes matrices D igual espacio abrir corchetes tabla fila 1 5 2 fila celda menos 1 fin celda 0 1 fila 3 2 4 fin tabla cerrar corchetes espacio espacio espacio espacio E igual abrir corchetes tabla fila 6 1 3 fila celda menos 1 fin celda 1 2 fila 4 1 3 fin tabla cerrar corchetes Calcula D-E

Not sure how to solve this if I am not given any numbers :( 35. Drug Sensitivity The sensitivity S to a drug is related to the dosage a (in milligrams) by S = 1000x - x2 Sketch the graph of this function and determine what dosage gives maximum sensitivity. Use the graph to determine the maximum sensitivity
image text in transcribed

Based on this definition, we can easily verify several cases: . For 1NN, df = n . If yi = y, i.e., nNN, then df = 1 . For linear regression, df = p . For NN, df = n/k The formula works for kernel methods too, we shall see that later on
image text in transcribed

A group of 36 car owners calculated that their average repair bill was $190 with a population standard deviation of $8. Compute the 90% confidence interval for the mean repair bill of all the owners.

The movement of a plate completely surrounded by convergent or transform boundaries cannot be altered directly by ridge push. The movement of a plate completely surrounded by convergent or transform boundaries cannot be altered directly by ridge push. True False

What data do we need to do ROI analysis for branded keywords on Google?

Suppose two OSU freshmen Kyle (k) and Brock (b) went on a spring break and ended up on a desert island. After roaming the island for 3 hours, Kyle found 3 quinces (q) and 2 watermelons (w). Brock roamed the island for 7 hours and found 1 quince (q) and 6 watermelons (w). Kyle and Brock have identical tastes. Kyle's utility function is U k q k , w

what is a 6 digit number that is divisible by 4, but is not divisible by 8, and explain how you know it has those properties. For testing if a number is divisible by 2, we only need to look at the one's digit. Why is that? If a student asked you to explain why, what would you say to them or show them? For the number 1,251,036, use the divisibility

CONNECTING CONCEPTS Find the values of x and y . Then find the measures of the interior angles of the polygon
image text in transcribed

Two triangles are given. One triangle has the following marked: Angle U has an arc with three hash marks, angle V has an arc with two hash marks, and angle W has an arc with one hash mark. U V has one hash mark, V W has two hash marks, and U W has three hash marks. The other triangle has the following marked: Angle X has an arc with three hash

Hi, please i need help with this applied statistic question Locate a psychometric tool based on your subject of interest. Describe how reliability and validity testing was done. How is this tool applicable to your practice?

Test whether p 1 > than p 2 . The sample data are x 1 =123, n 1 = 251, x 2 = 133, and n 2 = 314. z 0 = ___ p= ____

Write equation of parabola (3, 3 Write the equation of the parabola in standard form
image text in transcribed

Figure LMNO is located at L (1, 1), M (2, 3), N (4, 3), and O (5, 1). Use coordinate geometry to best classify quadrilateral LMNO. Kite Parallelogram Square Trapezoid

The revenue function for a bicycle shop is given by R(x) = x - p(x) dollars where x is the number of units sold and p(x) = 700 0.4x is the unit price. Find the maximum revenue. Answer B Keyp How to enter your answer (opens in new window) Keyboard Short dollars
image text in transcribed

A Gallup survey showed that in March 2011 ,8 of every25 employers in the United States were adding more workers to their workforce,9 of50 were reducing their workforce, and1 of2 were keeping it the same. In a metropolitan area there are1250 employers and of those who will hire, they will hire an average of seven new employees. If the employers who

(1 point) Suppose z = z? sin Y, T = 152 + 32, y = 6st. A. Use the chain rule to find % and % as functions of x, y, s and t. 0z Os 9z dt B. Find the numerical values of % and % when (s,t) = (3,1). 0 8_2 (3: _1) = % (3: _1)
image text in transcribed

design a 30 foot long rectangular simply supported beam with an exterior exposure

PCC math instructors were each asked how long it takes them (in minutes) to drive to campus. \f
image text in transcribed

If I had 80 residents and 50 of the resident was on multiple medications, what is the percentage of rate of residents on multiple medications? Which is the numerator and denominator, and how to solve them.

Calcula el monto total acumulado al final de 3 aos con un prstamo de $300.000 USD al 5% anual, capitalizable anualmente

For question 2, if the constraint was x+y = 1 instead of x+y <1, how would that affect finding the max or min?

please answer thank you. Create a drawing using conic sections in a graphing paper. Draw at least 1 of each conic section. On another sheet of paper, write the standard form of equation of each conics you used in your drawing. You may search for examples. NOTE: the cartesian plane must be drawn as reference for the equations
image text in transcribed

A lily pad grows so that each day it doubles its size. On the twentieth day of its life, it completely covers a pond. On what day was the pond half covered? Please clearly delineate Polya's 4 steps to problem solving as a framework when posting a solution.

Fifty people were asked to go from NY to LA.They have options to travel by car,train,bus or plane.What is the probability that 10 people travel by car,5 by train,8 by bus and the remaining decide to fly(Assume that each person independently makes the decision and randomly picks any one of the four available options).

I need help on this Calc 3 problem Use the gradient method to find all points (z, y) at which the function g(2) = TV4 - r2 has horizontal tangent line
image text in transcribed

content area top left Part 1 Determine the amplitude and period of the function. Graph the function. y equals negative one half cosine StartFraction pi Over 3 EndFraction x Question content area bottom left Part 1 The amplitude is one half . (Simplify your answer.) Part 2 The period is 6. (Type an exact answer using pi as needed. Use integers or

Where would one find the Baobob tree seen here? Group of answer choices Pampas of Argentina Savanna Tall Grass Prairie Steppe of Kazakhstan

misa earned a score of 83 on her latest exam. THe professor determined that all of the scores from this exam had a normal distribution with a mean of 87 and a standard deviation of 1. What is Misa's Z score on her exam?

H0: p=0.7 versus H1: p>0.7 n=250, x=180, alpha=0.01 What is the p-value?

A researcher records the change in weight (gain or lost) during the first semester of college for each individual in a group of 25 freshmen and calculates the average change in weight. The Average is an example of a _____ parameter Statistic variable constant

Pre-Calculus Midterm Directions: Answer the questions below. Make sure to show your work and justify all your answers. Use the graph to determine the domain and range of the relation, and state whether the relation is a function. 10
image text in transcribed

9. Tyler made the following conjecture: A polygon with four right angles must be a rectangle. Matthew disagreed with Tyler's conjecture, however, because the following figure has four right angles, and it is not a rectangle. How could Tyler's conjecture be improved? Explain the changes you would make
image text in transcribed

Inscribed Quadrilaterals 10 6 points A diagram is shown. mLD: A type your answer.. (42 + 10) Shy (6z + 19) B D (26+ 52) C What are the angle measures of the inscribed quadrilateral? Previous
image text in transcribed

Solve. r(13rplus5)equals8 . . . Question content area right Part 1 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. requals enter your response here (Type an integer or a simplified fraction. Use a comma to separate answers as needed.)

please teach me this question in detail steps Use an upper-case "C" for the constant of integration \f
image text in transcribed

If f ( x ) = x 2 +2 x 6 and g ( x ) =2 x 9, find the following function. f g

nur zaini borrows 1000000 at 4% compounded monthly from a bank. she intends to settle the loan by making 120 monthly repayments. a) find the monthly repayments. b) calculate the total interest charged c) determine the fifth payment to settle all arrears if she has not paid the first four payments d) if she decides to settle the loan after the

find the derivative of = 9x^2 + 3x(1/x) + 3x(1/x) + 1/x^2

s.Schoology.com/common-assessment-deliv Circles Find the area of the sector to the nearest thousandth. 10) 3150 14 mi
image text in transcribed

How many houses cost more than $200 thousand and less than or equal to $800 thousand? Boston Real Estate Prices vertical bar graph. Access image details Houses costing more than $200 thousand and less than or equal to $800 thousand. Approximately 11 Approximately 15 Approximately 22 Approximately 25

A particle is moving with the given data. Find the position of the particle. v ( t ) = sin( t )cos( t ), s (0) =5 s(t)= ?

Let t represents the number of months since January. The number of termites in a nest in any given month can be represented by the function < . The number of ants in a box can be represented by the function in the table: Month 0 1 2 3 4 Number 20 45 101 228 513 What is the positive difference between the original number of termites in the nest and

[1 pt. each] Determine whether the given value is a parameter or a statistic. a. A recent stud},F found that T4.1% of all college students attend public institutions. 1:). A math instructor wants to know the mean score in Exam 1 of all their stats classes. The mean for one of their classes is TECH]
image text in transcribed

D Question 3 2 pts The graph of a function f is given. Use the graph to answer the question. What is the domain of f? 5 7y + -5 -5 O all real numbers O {x1-5 s x $ 5) O {x1-4 s x $ 5.5} O {xlx 2 0}
image text in transcribed

45. AC and AD are common tangents of circles F and G. BE, FE, CG and GD are radii. FE = 8; CD = 24; DE = 7.5 Find AC C B A F G E D
image text in transcribed

What is the easiest way, possibly without uniting? show steps thanks. 1. Given the three points (1, 2, 1), (-1, 0, 4), and (2, 1, 5), (a) Determine a vector equation of the plane that contains the three points. (b) Determine a scalar equation of the plane that contains the three points
image text in transcribed

given the quadrilateral is a parallelogram, solve for x D 16x + 4 68 0 B Ox = 4 Ox = 12 Ox =7 Ox = 2
image text in transcribed

Please I need help with this question. Question 19. \f3:19 U learn.umuc.edu C Est. Length: 3:00:00 Chimsomaga Ozuzu: Attempt 1 Previous Page Next Page Page 19 of 24 Question 19 (5 points) A manufacturing process with acceptance limits 100 + 3 produces measurements in file DATA. What percentage of production does not meet the acceptance limits?
image text in transcribedimage text in transcribed

Looking for an answer with detailed theoretical explanation for my understanding \f
image text in transcribed

Identify the following as paired or independent samples. 1. The attitudes towards behaviors of 21 famous psychologists were compared to those of each one's designated "best student". 2. At a hunting club the squirrel hunters had a contest with the quail hunters to see who could hit the most moving targets.

I need help If the selling price and amount spent on marketing were entered into a multiple regression to determine what affected flat panel TV sales with a regression coefficient for Price found to be -0.04055, what would be the correct interpretations 1) Increasing the price of tv by $100 will result in at least 4 fewer sales 2) holding the

The weights of the fish in a certain lake are normally distributed with a mean of 13 lb and a standard deviation of 12. If 16 fish are randomlyselected, what is the probability that the mean weight will be between 10.6 and 16.6? Round your answer to four decimal places. A. 0.3270 B. 0.4032 C. 0.0968 D. 0.6730

The mean value in a dataset is 100, and the value of one standard deviation is 20. What is the value of a piece of data is 2.5 SDs above the mean

Which of the following can happen to you if you're charged and sanctioned with multiple academic integrity violations? Group of answer choices I can be suspended from ASU for a minimum of one year. I can be permanently expelled from ASU. I can receive an XE, which will be displayed permanently on my transcript and means failure due to academic

Work Problem. {write neatly and provide clear and detailed solution) Question 1: The family of functions y = 6186:\": + age6x 3x is the general solution of the differential equation y" 36y = 108x. Find a solution to the IVP: y" 36y = 1083:, y(0) = 1, y'(0) = _2
image text in transcribed

1. Angles A and B are located in the first quadrant. If sin A = 13 and cos B = sin(A + B). vv VV , determine the exact value of
image text in transcribed

Hello! I was wondering how to properly set out the way of finding Q1, Q2 and Q3 from a cumulative frequency histogram. Is there a formula for each of them, as I know that finding Q2 when there is an odd number of results, its (n+1)/2 which is the one which is Q2, but for even numbers, it's more confusing. So can someone clarify on the formulas for

What might a hypothetical cross-tab might look like and how it relates to a chi-square?

3. (20 points) Let X ~ MVN(u, E). Partition X as X = Find the conditional distribution of X1 given X2
image text in transcribed

You want to buy a hamburger that costs $6.12, a large fries that costs $4.10, and large soda that costs $1.99. There is a meal deal which will give you all these items for $10. How much does the deal save you over the original prices? (Answer in dollars and cents with NO dollar sign.)

Use synthetic division to find the quotient and the remainder. 2x^3 + 12x^2 + 15x - 15 __________________________ X + 3 The quotient is ___. (Use integers or fractions for an numbers. Do not factor) The remainder is ___. (Use an integer or a simplified fraction)

can you walk me through this problem? thanks 3. Classify a Mathematical Object Which of the following are vertical asymptotes of f (0) = tan (20)? Vertical Asymptotes X= 4 X= N F 3 TT X =- 4 X = 1
image text in transcribed

14. To obtain licensure, broker applicants must have a minimum of how many years of salesperson licensure? a. One year b. Tu o years c. Three ycars d. Fit e years

In order to study the effectiveness of a training program,PresidentKirkman randomly picks 5 employees and records the respective time taken in assembling Part K.If the times are9, 6, 5, 8, and 10 minutes, what is the standard deviation?

Hello, is it possible if you can help me on this problem? I have tried it and got it wrong but I want to know why. Use Newton's method to find the positive root of the equation x + 3 = x^4 correct to 6 decimal places. Start with x, = 1. Fill in each box with at least 6 decimal places! X1 = 1 X2 = X X3 = X XA= X X5 = X X6 = X X7 = Finish review
image text in transcribed

In the game ofroulette, a player can place a $4 4 bet on the number 28 28 and have a StartFraction 1 Over 38 EndFraction 138 probability of winning. If the metal ball lands on 28 28, the player gets to keep the $4 4 paid to play the game and the player is awarded an additional $140 140. Otherwise, the player is awarded nothing and the casino takes

II. You purchased a new tablet computer for $990. New tablets depreciate at 17% a year. 7. What is the value of the tablet after 1 year using the straight-line depreciation method? Show your work here: 8. Using the straight-line depreciation method, between what two years after purchase will the value of the tablet be $0
image text in transcribed

Showing 1300 - 1400 of 1393
  • 14 / 14