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Mathematics Questions and Answers October 21, 2022

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The null distribution for the test of Spearman's rho = 0 versus Spearman's rho does not equal 0 is A:Normal with mean rho and variance sqrt(rho/n) B:A t distribution with n-2 degrees of freedom C:only found using a permutation test D:does not exist

Hello can you solve this prob for me? I need it step by step 4. Consider a class of 20 students. For any given student, suppose there is a probability of 0.2 that his/her GPA is over 3.0. When considering this class, i. what is the probability that only five students have GPAs over 3.0? ii. at least 5 students have GPAs over 3.0? iii. more than 5
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4 Claim: Most adults wouldnot erase all of their personal information online if they could. A software firm survey of 677 randomly selected adults showed that 49.7% of them would erase all of their personal information online if they could. Make a subjective estimate to decide whether the results are significantly low or significantlyhigh, then

1.2) A marketing manager at a big retail shop claims that the variance in the weights of cereal boxes are less than 0.003 kilogram 2 . Thus, the weights (in kilograms) of a random sample of eight of these cereal boxes are listed here. 1.07 .98 .95 1.05 .99 1.09 1.03 .96 1.2.1 Test this clam at a 1 % level of significance. (8) 1.2.2 Estimate the

Question 5, 4.6.37 HW Score: 0%, 0 of 8 points Part 1 of 3 O Points: 0 of 1 Save In 2000 the population of country A reached 3.5 million, and in 2025 it is projected to be 5 million. (a) Find values for Po and a so that the following formula models the population of country A in year x. f(x) =P a* - 2000 (b) Estimate the country's population in
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The US department of agriculture claims that the mean consumption of coffee by a person in the United States is 24.2 gallons per year a random sample of 120 people in the United States shows that the mean coffee consumption is 23.5 gallons per year assume the population standard deviation is 3.2 gallons at 0.05 significant level can you reject the

o further test your understanding of this tutorial, attempt to complete the following exercises. For each exercise, you will need to use your original geometry, but apply different boundary conditions 1. Calculate the critical buckling load for a column that is fixed at one end and free at the other

A researcher for a large pharmaceutical company is testing a new drug designed to reducewhat are called "cluster" headaches. This new, as yet untested drug, is called "No-Ache", or NA for short. He believes that NA will reduce the number of cluster headaches per week for chronic cluster headache sufferers. For a week prior to the administration of

A researcher wishes toestimate, with 99 % confidence, the population proportion of adults who support labeling legislation for genetically modified organisms(GMOs). Her estimate must be accurate within 6 % of the true proportion. (a) No preliminary estimate is available. Find the minimum sample size needed. (b) Find the minimum sample sizeneeded,

choose any suitable quantitative variable (use the raw data), then: (A part i already did it) b) compute the three measures of central tendency and interpret the values. c) compute the two measures of dispersion: IQR and standard deviation and interpret the values. d) compute the skewness values and conclude the data distribution. info you may
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The average U.S. daily internet use at home is 140 minutes .A sample of 64 homes in Soddy-Daisy showed an average usage of 170 minutes with a standard deviation of 80 minutes .We are interested in determining whether or not the average usage in Soddy-Daisy is significantly different from the U.S. average. The correct hypotheses to be tested are

Convert the following statement into a conditional. A quadrilateral with 4 congruent sides and 4 congruent angles is a square. If a quadrilateral has 4 congruent sides and 4 congruent angles, then it is a square. If a figure is a quadrilateral, then it is a square. If a quadrilateral has 4 congruent sides, then it is a square. If a quadrilateral

Suppose that f(z) 1s entire and that the harmonic function u(x, v) = Re[ f(z)] has an upper bound ug ; that 1s, u(x, v)
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Use an area model to show the answer for 2 /5 3 /4. Then, use the procedural algorithm to check your answer.

The mean score on the math portion of the ACT for the year 2000 is= 20.7. A sample of 20 students in a local school district had a mean of 22.95. Using the sample, a 95% confidence interval estimate for the mean is (20.76, 25.14). State thepoint estimate for the mean ACT score for students. Based on this sample information , do you believe that

A college plans to set up an endowment fund that will provide a scholarship of $5,000 at the end of every quarter, in perpetuity. How much should the college invest in the fund, if the fund earns 5.00% compounded quarterly? Round to the nearest cent

I did a & b. I got stuck on c. I can not seem to get the right graph I tried excel and MATLAB. Please do not just show me the actual graph. I need to know how to get it. 6. Consider the spreading of a highly communicable disease on an isolated island with population size N. A portion of the population travels abroad and returns to the island
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2. You bought a house for $494,000. Your mortgage is for 30 years at a fixed rate of 3.2%. How much will you have to pay toward your mortgage every month? (5 points) Make sure to use appropriate formula and show all your work step by step using the space below

A morning radio show opted to advertise on a transit bus with a long vinyl poster on the exterior of the bus and an extra wrap above the bus windows running the length of the bus. What did they select? Question 2 options: A headliner Exterior vinyl cards A bus strip with extensions A mini-superbus

in the independent-measures t statistics, what would be the effect of increasing the sample variances? A) Decrease the likelihood of rejecting H0 and decrease measures of effect size. B) Decrease the likelihood of rejecting H0 and increase measures of effect size. C) Increase the likelihood of rejecting H0 and increase measures of effect size. D)

10. (4 points) The following table shows the mean and standard deviations of two variables r and y. Mean 5.5 6.1 Standard Deviation 3.03 1.49 The correlation coefficient between the two variables is approximately 0.739. Determine the equation for the least-squares regression line between r and y. Hint: See the Chapter 4 PowerPoint slides in Canvas
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Classify the following ARMA models for those 2 equations _______________________________________________________________________ z_t-0.17z_(t-1)+0.19z_(t-2)=12+a_t+0?2a_(t-1) z_t+0.2z_(t-1)+0.04z_(t-2)=a_t+0?4a_(t-1)+0.3a_(t-2)-0.2a_(t-3) ________________________________________________________________________ 1- determine the mean of each model.
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Question 12 19 pt Write an equation that relates Number of hours of tech support and Cost for the service. Two hours cost $54 and 5 hours costs $120. Let x represent the number of hours and C represent cost. O C =24x O C = 20x + 14 O C = 27x O C = 22x + 10
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49.) Your antepartum patient with a DVT is to receive heparin at a rate of 100 units per hour. the Ivy bag contains 10,000 units of Hepburn in the 250 mls of NS how many MLS per hour should she receive

A B C D E F G H 1 The Wheat Shipping Transshipment Example 3 One Term for Every Branch One Constraint for Each Node Left Hand Right Hand Branch Decision Side of Side of Constraint 4 Beginning Branch End Variable Cost Node Constraint |= 5 1. Nebraska 3. Kansas City 16 1 300 6 1. Nebraska 4. Omaha 10 300 7 1. Nebraska 5. Des Moines 12 0 8 2.
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Most exhibition shows open in the morning and close in the late evening. A study of Saturday arrival times showed that the average arrival time was 3 hours and 48 minutes after the doors opened, and the standard deviation was estimated at about46minutes. Assume that the arrival times follow a normal distribution. (a) At what time after the doors

Identify which sampling technique was used in the following study law enforcement officials stop and check the driver every fourth vehicle blood alcohol content

Find dy/dx in two ways: by using the "Chain" differentiation patterns and by using logarithmic differentiation. a) y=e sinx b) y=x cosx c) y = x5 (3x + 2)4
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or the linear advection equation ut aux = 0, where a > 0 is a constant, a generalized upwind scheme on a uniform mesh is defined by U n 1 j = (1 )U n p U n p1, where 0 < 1 and xp = xj x at, xp1 = xj1 x at. (In practice, one needs to approximate U n p , U n p1 with neighboring U n j values.) b) Show that the scheme is always stable. Hint: Use

Identify the function as a power function, a polynomial function, or neither. f(x)=3 x+1 (a)A power function (b)A polynomial function that Is not a power function (c)Neither a power function nor a polynomial function

) After viewing the attribute table and discovering a Count of 58428 with the image having a linear unit in Meters (1.0) and GSD of 30 meters how would you compute the total area of water found in the image? What are the area units and how would you convert the result to units of square miles

If the middle68% of the 7th graders kids in a school are in the range of 5' 1"and 5' 9", what is the standard deviation (in inches)? Note: Assume Normal Distribution as 68% is typically used for Normal Distribution.

7 O Mark this ques The value V (in dollars) of a vehicle depends on the miles x that it has been driven. This is given in the formula V = 22,000-0.25x . After one year, the value of a vehicle is between $12,000 and $15,000. Which range of miles driven corresponds to this range of values based on the given formula? 18,000 Sx S 19,000

The National Post offers an open cost per line of $17.69. If the advertiser's ad requires 8 columns and 200 lines, what is the absolute cost for the ad (to the nearest dollar)? Question 18 options: $28,800 There is not enough information provided to determine the absolute cost $28,304 $28,300

According to a 2009 Reader's Digest article, people throw away approximately 8% of what they buy at the grocery store. Assume this is the true proportion and you plan to randomly survey 173 grocery shoppers to investigate their behavior. What is the probability that the sample proportion is between 0.11 and 0.15? Note: You should carefully round

2) To examine pricing decisions regarding your new gutter-cleaner (a nozzle that attaches to a hose and allows you to clean out gutters from the ground), suppose you survey 1000 consumers selected at random. To each consumer you exhibit the product. For 500 consumers you offer the product at $20, for the other 500 you offer the product at $25. The
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Giyen the matrix below: perform the following row operation: R2 being replaced by R2 1:? R1? Write your answer as a matrix using the following syntax: square brackets. the entries are listed by rows {with one space between each entry]: with the rows separated by a semicolon. Please follow this example: [4 512:5 5 1D] [los] t1
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A person's blood glucose level and diabetes are closely related. Let x be a random variable measured in milligrams of glucose per deciliter(1/10 of a liter)of blood. Suppose that after a12-hourfast, the random variable x will have a distribution that is approximately normal with mean =85and standard deviation =29. Note: After 50 years of age, both

43. toos (t? ) dt Click to display the answer to this question. Hide Answer O| k cos2 (t2) sin (t?) + = sin (t?) + C
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Please answer me 9-) A sample of ve measurements, randomly selected from a normally distributed population, resulted in the following summary statistics: 3? = 4.8 and s = 1.3. a) Test the null hypothesis that the mean of the population is 6 against the alternative hypothesis pt
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Welcome Assignment 4 - Math Problems (14 questions 28 points ) Show all work and units. METRIC CONVERSIONS ips-for-ap-exam.pdf for details. PERCENTAGES ' f for details. 7) Calculate the percentage growth rate for a country with a population of 7 million in a year in which it had 100,000 births, 70,000 deaths, 30,000 immigrants, and 40,000
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Elon Musk has decided to own no home. Describe how his permanent abode will be determined. Is tax a motivator in his choice? Your answer should be well written as the answer will be graded using the PA Writing Assessment Domain Scoring Guide

Which of the following is NOT true about a worm gear set? Which of the following is NOT true about a worm gear set? The number of worm teeth is called thread. The number of gear teeth is called thread. The worm is an extreme case of a helical gear with a large helix angle. The lead angle of the worm must be equal to the helix angle of the worm for

Simplify. RootIndex 3 StartRoot negative 27 EndRoot

Can you help with the following exercise based on diagram a data set with an exponential or logarithmic function? Please see instructions below. Please provide step by step solution and a clear format for better understanding. Note: In case the result is decimal, you will round it to two decimal places. I. Suppose a physician is monitoring cancer
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n an article in the Journal of Management, Joseph Martocchio studied and estimated the costs of employee absences. Based on a sample of 176 blue-collar workers, Martocchio estimated that the mean amount of paid time lost during a three-month period was 1.4 days per employee with a standard deviation of 1.2 days. Martocchio also estimated that the
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Based on the scale of measurement for the data, identify if a test is parametric or nonparametric. A researcher measures the proportion of schizophrenic patients born in each season. A researcher measures the average age that schizophrenia is diagnosed among male and female patients. A researcher tests whether frequency of Internet use and social

Hello. Please find Laplace transform of the following functions. Thank you. 2t +1, 0 n 0, 12 2n 0. OKx
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7. Use SC/LAB to solve the following systems simultaneously and attach SCILAB output [3 marks] 2x - 5y + 6z = b1 -3x + 4y + 6z = b2 -2x + 5y + 3z = b3 a ) b, = 1 b2 = 2 by = 7 b) b, = 5 b 2 = 8 by = 9
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Which of the following decision boundaries can be learned by the neural network? Assume w o , w 1 , x 0 , x 1 , T a R n w o ,w 1 ,x 0 ,x 1 ,T a R n and z = w 0 x 0 w 1 x 1 z=w 0 x 0 w 1 x 1 . Let g ( z ) g(z) be the binary step activation function with T a T a as the decision threshold, which is defined as follows

Which of the following is a best practice to follow to use email safely? Which of the following is a best practice to follow to use email safely? Don't worry, do nothing.... the problem belongs to IT. All of the answers are correct. Call the number listed on the email to verify the sender. Reply to all spam in a timely manner. Click on the link

Find the volume of the figure when d = 8 cm. For calculations involving 7, give both the exact value and an approximation to the nearest hur cm s X cm 3 X Enter a number.
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A private post-secondary corporation had a 1-year low stock price of $18.69 and a high of $40.47. Assuming that you bought it at the lowest price and sold it at its highest price, what is the simple annual rate of return on your stock purchase?

Discussion Topic - Infinite Series Convergence Flow Chart In the last module you learned many tests for convergence of a series. Let's get creative and make a flow chart for approaching the question of convergence or divergence of a series. Consider the tests you have and come up with an order and list of questions that you can ask yourself to

Weighted average cost of capital: Component EV Weight After-tax rate Weighted nate Debt #DIV/O! #DIV/O! Equity #DIV/O! 010026 #DIV/O! #DIV/O
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Sketch at least one cycle of the graph of the function yequalscosine left parenthesis StartFraction pi Over 2 EndFraction x minus StartFraction 5 pi Over 2 EndFraction right parenthesis . Determine the period, phase shift, and range of the function. Identify five points on the graph. The five basic points of the fundamental cycle of yequalscosine

four values of p are 0.6, 0.95, -0.6, and-0.95. Study the residual plots, and match each graph to its value of p. Graph A. Graph B 1 AN A Residual Residual Time Time Graph Graph D Residual Residual +--- -- - - ---A--. 111 VY Time Time The value of p for Graph B is ; the value of p for Graph C is One method of detecting autocorrelation is to
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The critical value of 2 for a 2 x 2 table using a 0.05 significance level is 3.841. If the value of the 2 statistic in a test for whether gender and colorblindness are related had been 3.179, state your conclusion about the relationship between gender and colorblindness.

Problem 1: Let a and b be real numbers such that 0 1, 0 1, ab + ba 2, a-+b n
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Question 3 1 pts (Lesson 7.12: The Box-Muller Method.) Suppose Uj and U, are i.i.d. Unif(0, 1) with U1 = 0.1 and U2 = 0.8. Use the "cosine" version of Box-Muller to generate a single Nor(-1,4) random variate. Don't forget to use radians instead of degrees! Oa. -0.326 Ob. 0 O c. 0.326 O d. 0.663 O e. 1.96
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The diagonals of rhombus ABCD intersect at E. C 21. Given that myCAD is 20 and CE = 4, find 4 the indicated measure. 23. m_BCA 24. m_CDA 25. AC 20 22. Determine whether the given points represent the vertices of a trapezoid. If so, determine whether it is isosceles or not. 23. 26. A(-4, -1), B(-4, 6), C(2, 6), D(2, -4) 24. 27. A(-5, 2), B(-5, 6),
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Use description of shape,center,and spread to compare the distribution of calories in adult & child cereals.

In a survey of a group ofmen, the heights in the20-29 age group were normallydistributed, with a mean of 69.8 inches and a standard deviation of 3.0. A study participant is randomly selected. Complete parts(a) through(d) below. (a) Find the probability that a study participant has a height that is less than 65 inches. The probability that the

\f(4) 1. (F - A) & (C _ B) 2. (B V A) =D 3. EVB 4. (E - C) & (B - F) / D 5. EDC 6. BF 7. CVF 8. CZB 9. FDA 10. BVA 11. D Part II: Provide a proof for each argument. The empty lines are suggestions only. It is possible to complete the proof in the number of lines given, but you may write a proof with more or fewer lines, as long as it is a correct
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Ankit deposits $800 in an account that earns 6% yearly interest compounded monthly. How much will the account be worth after 2 years, assuming that Ankit does not withdraw any money from the account? Round your answer to the nearest cent . Do NOT round until you calculate the final answer.

Suppose f(z) is C-differentiable at zo, meaning lim f(z) - f(zo) 2-+20 2 - 20 exists. Prove that (f(2)) is C-differentiable at zo, using the rules for limits. (hint: one step in the calculation might be to add and subtract f( 2)f(zo) from (f (=))2 - (f(20))2)
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Keith tabulated the values for the average speeds on each day of his road trip as 61.5, 62.2, 55.7, 50.6, 71.3, 70.8, and 66.8 mph. Hewishes to construct a 90% confidence interval. What value of t* should Keith use to construct the confidence interval?Answer choices are rounded to the thousandths place. \f
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Part 2: The processor speeds, in megahertz (MHz), of Intel processors during the period 1996-2010 can be approximated by the following function of time t in years since the start of 1990: v(t) = $400t - 2200 if 6
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A man claims to have extrasensory perception (ESP). As a test, a fair coin is flipped26 26times, and the man is asked to predict the outcome in advance. He gets18 18out of26correct. What is the probability that he would have done at least this well if he had no ESP? Probability =

What is next computer representable number after 1 (assuming 64 double floating point numbers)? What about after 67.75? Note: I would like to see the exact value (written as a sum of two expressions) and an approximation (for example written in scientific decimal notation). 1

Need help with this question. Thank you :) Question 2 (25 marks) Modelling our 5 x 5 x 5 Rubik's cube The following pictures show a curious Rubik's-cube-like structure that greets visitors to the Melbourne Museum. West The picture on the right shows what you see when you look at the cube from above using Google Earth Google Earth allows you to
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QUESTION 24 . 1 POINT Evaluate the definite integral given below. 7/ 4 (-3 tan (a) sec (a) - 2x2) dac 71/4 Enter an exact answer. Provide your answer below: 27/4 ( -3 tan(x ) sec(x) - 2x2 ) dx =At what value does the function f(z) = 2z + 6 take on the average value f(c) over the interval [7,1]? Provide your answer below: = a (5x - 24 - 7) da a
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Time to failure for a product follows a Weibull distribution with beta = 2 and eta = 400 months. In a random sample of 100 such products, how many would be expected to be in the failed state after 150 months?

The proprietor of a men's clothing store has recorded the buying behavior of customers over a long period of time. She has established that the probability that a customer will buy a shirt is about 40%. A customer buys a tie 60% of time when a shirt is purchased, but only 20% of the time when a shirt is not purchased. Suppose that a customer has

Analyze the function f(x) = - 2 cot 3x. Include: - Domain and range - Period - Two Vertical Asymptotes

A geometric sequence is defined recursively by a,, = 6a, , The 1st term of the sequence is 0.75. Which of the following is the explicit formula for the oth term of the sequence? A. a = 0.75 . 6(0 -1) O B. an - 6 . 0.75(0- 1) C. an - 6 . 0.75 D. a = 0.75 . 60 E. a = 0.75 . 6(1+ 1)

The following sample was collected during registration at a large middle school.At the 0.05 level of significance, can it be concluded that level of math is dependent on grade level? Honors Math Regular Math General Math 6thGrade 35 47 14 7thGrade 37 49 12 8thGrade 33 48 19 Hypotheses: H0: Level of math is________grade level. H1: Level of math

what is the y-intercept of the line in the equation y=5x-8/2

Let R3 have the usual componentwise vector space operations. Let S be the subset of R3 defined by S: K: 3:2 9x23::c3a':1a:2:0 Note that 8 contains the zero vector 0 . (a) EITHER state S is closed under vector addition by entering the word CLOSED in the answer box below OR show 5' is NOT closed under vector addition by specifying two different
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\f5. Solve for the unknown: tan2 3x + 2 tan 3x + 1 =0 for - NIN NIN* given => tam 2 3x + 2 tam 32 + 1 = 0 for, - F SXCA = ) Jet, tam32 = d. SoI d2 + 2 d + 1 = 0 ( d + 1 ) d+1 = 0 or d+ 1 = 0 SoI d = -1 ,- 1 NOW, tam (32) = - 1 =d 32 = tom (- 1 ) 3X = 3 / A + In 3 In So, De = - I - 5x 12 123 given = 8 in ( 2x ) = 2 CSC( 2x ) - tom ( 2 ) 1 - Cas ( 2
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What is the 97% confidence interval for a sample of 104 soda cans that have a mean amount of 15.10 ounces and a standard deviation of 0.08 ounces?

is it preterite or imperfect En 2015, Ana y Ricardo ______________ (venir) a Oxford por primera vez para estudiar en la universidad de Mississippi. Ellos _________ (llegar) a Oxford en agosto, y entonces _______(ser) verano, as que ________ (hacer) mucho calor. EL primer da en el campus de la universidad Ana y Ricardo ________ (caminar) por el

How would I determine the following? Suppose for a random sample of 1046 people age 15 orolder, the mean amount of time spent eating or drinking per day is 1.54 hours with a standard deviation of 0.74 hour. How would I determine and interpret a 99 % confidence interval for the mean amount of time Americans age 15 or older spend eating and drinking

The following statement is logical: My friends and I like to ride bikes. Group of answer choices True False

The management of ACME Automotive Repair Company, with over 400 franchises nationwide, has become concerned with the percentage of parts being ordered by mechanics and then returned as the wrong part.Since there is a 20% restocking fee for returned parts, the cost of these mistakes is considerable. Management contracts with Information Solutions,
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A substantival participle: Select one: a. Functions like a noun b. Functions like an adjective c. Functions like an adverb d. Will never have a definite article

2: Let A be the parabola y = x2. For each property of a subspace, prove or disprove that A satisfies it. Is A a subspace of R2? Problem 3: Let A be the union of the first and third quadrants, including the boundaries. For each property of a subspace, prove or disprove that A satisfies it. Is A a subspace of R2

Which of the following method determines the relative merit of a job based on the degree to which a compensable factor is present or necessary? Group of answer choices Factor comparison method Job degree method Hay Point Method Point-factor method

Al finalizar la evaluacin y luego de haber registrado las respuestas del estudiante, deber considerar en su informe lo siguiente: 1. Fundamentacin de la seleccin del instrumento de evaluacin psicopedaggica de la lecto-escritura (2 puntos). 2. Descripcin del o los instrumentos de evaluacin psicopedaggica (1,5 puntos). 3. Identificacin del motivo de

23:19 11iEl23EllE ... $52% T :
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sampling bias is virtually unavoidable and that it is important to disclose and discuss possible sources of bias in the study report. Do you agree? Explain your position.

Conduct an analysis and hypothesis test of your choice on the data you collected. what steps are required to summarise research findings generated . The research summary should address the following. Explain what type of analysis and hypothesis test was conducted on the data collected. Summarize the survey results based on the results of the data

Use the chart below to help you set up the proportion. 4. The largest piece of cheese in the world was 920,136 ounces. How many pounds is this? 5. The length of a professional football field is 360 feet. How many yards is that? 6. You and your friends are going on a road trip across the country. You start in Macon and end up in California. It

Market research indicates that a new product has the potential to make the company an additional $3.8 million, with a standard deviation of $1.8 million. If this estimate was based on a sample of 10 customers, what would be the 90% confidence interval?

Q11 Compute (a) [3.14] = (b) Compute - 4] = Q12 Construct the equation of the line passing through (0, -2) and (3,5). Q13 Use the limit definition of the derivative to find the derivative of the following function: f(x) = x -5x Q14 Find the equation of the tangent line to the curve f (x) = 2x(x - 3) at x = 1
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14. If the factored of -2(ax - b), which solution satisfies the value of a + b = 4? A. a = -4 and b = 8 EX + B. a = 5 and b = -1 C. a = 3 and b = 1 D. a = 2 and b = 2
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As students get older, risk-taking in math problem solving tends to: Group of answer choices be the same as when they were young. increase. decrease. change for the better

The graph of a quadratic function with vertex (-4, 2) is shown in the figure below. Find the range and the domain. -1-- x + -10 - 6. 10
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Drew is planting grass. The lawn is a rectangle that measures 120 feet by 75 feet. Drew uses 1 pound of grass seed for every 200 square feet. How much grass seed does Drew use. A. 90 pounds B. 390 pounds C. 45 pounds D. 195 pounds
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