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Mathematics Questions and Answers April 14, 2021

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For a given value of x, the confidence interval for y is narrower than the prediction interval for y. true or false?

A company has three manufacturing plants, and you want to determine whether there is a difference in the average age of workers at the three locations. The following data are the ages of five randomly selected workers at each plant. Perform a test to determine whether there is a significant difference in the mean ages of the workers at the three

Analysis: Part 2 Suppose there had been some disagreement among the managers as to the responsiveness of some of the drugs to changes in sales effort. In partic- ular, some managers felt that the estimates of Praxonil's potential were a bit conservative. Others felt that Didex and Zynalar would have a differ- ent responsiveness to sales force
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Every lumen of a multiple lumen catheter must be flushed, whether in use or not

statistics and probability The ages of the winners of a cycling tournament are approximately bell-shaped. The mean age is 27.2 years, with a standard deviation of 3.5 years. The winner in one recent year was 23 years old. (a) Transform the age to a z-score. (b) Interpret the results. (c) Determine whether the age is unusual. (a) Transform the age
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The graph of function fis shown below. Point P(-1,2) lies on function f. Function fis transformed to create function k. P(-1,2) 3 2 -9 -8 -7-6 -5 -4 -3 -2 -1, 1 2 3 4 5 6 7 8 9 -1+ -2+ -3 1. Which equation describes a transformation such that Point P will lie on the y-axis? A) k(x) + 2 = f(x+ 1) B) k(x) - 4 = f(x - 1) C) k(x) - 2 = f(x+ 2) D) k(x)
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As part of a quality improvement program, a mail-order company is studying the process of filling customers' orders.According to company standards, an order is shipped on time if it is sent within three working days of the time it is received.The company claims that 87% of the orders are shipped on time.In a random sample of 100 orders received in

(3 pts) Consider the polycrystalline silicon (polySi) device shown below. The is 160 GPa. The shuttle is 10 microns thick and is rigid compared to the thin is 50 microns in both width and length. The beams on each side of the shutt long, 3 microns wide, and 2 microns thick. The polysilicon beams and mass ohmic losses may be neglected. Beneath the
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Please answer all questions and show work: 20) n! 71= 1 n ((1 -2) - (2+1)3 -612 -2)"/3 O No. Is O Yes. The center is 1. a power series? If so, what is its center? O Yes. The center is -2. Yes. The center is - 1. 21) What is the third Taylor polynomial for O y = (x - 1) + (x -1)2 -3(x -1)3 f (I) = 21 centered at x = 1? O y=1+5(@-1)+ 10 O 1 1 10 -9
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Determine whether the given ordered pair is a solution to the system of equations. 6xx - 2y = 40 -3x + 3y = 12 and (12, 16) Yes, it is a solution. No, it is not a solution. Show your work and explain how you arrived at your answer. Answers with dorstanding of the topic and may get reduced or no cre
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A marketing professor at Givens College is interested in the relationship between hours spent studying and total points earned in a course. Data collected on 10 students who took the course last quarter follow. Hours Spent StudyingTotal Points Earned45403035907560651059065509090808055457565(a) Develop an estimated regression equation showing how

Lequel?Fill in the blanks Activity 3 ATTEMPTS LEFT Changez ces questions pour utiliser une forme de lequel. Questions Modle Vous lisez: quelle universit voulez-vous vous inscrire? Vous rpondez: Example answer laquelle voulez-vous vous inscrire?End example answer Question 1 with 1 blank De quelle vido est-ce que vous parlez? 1 of 1 Question 2 with

Consider the vector field F(x,y,z) = (y2,z,x) and the curve C that 2 is the intersection curve of the plane x z = 1 and the ellipsoid x2 2y2 z2 = 1 oriented counterclockwise when viewed from pos- itive z-axis. Calculate R F dr

In 2 dimensions: Familiarize yourself with rotation matrices: Consider the 2 2 matrix R() = cos sin sin cos . Show that it describes a rotation, i.e. that it is orthogonal and has determinant +1. Consider the transformation r 7 r = R() r of a vector r = x y with a rotation angle (0, 2). Is the vector rotated clockwise or counterclockwise

Express answer in exact form. Show all work for full credit. A segment of a circle has a 120 arc and a chord of 8v3in. Find the area of the segment
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Correct In his first week at college, Marshall spent $39 on entertainment, $23 on food, and $23 on gas. If there are I I weeks in the semester, estimate the total amount of money Marshall will spend on these things throughout the semester by rounding all values to the nearest ten

Using the Pearson correlation coefficient, a study on addiction found a positive correlation between time of cravings and time of relapse (r=.51) in a sample of 20 people with a drug addiction.Using a two-tailed test at a .05 level of significance, state the decision to retain or reject the null hypothesis.

Amherst City provides a defined benefit pension plan for employees of the city electric utility, an enterprise fund. Assume that the projected level of earnings on plan investments is $190,000, the service cost component is $260,000, and interest on the pension liability is $170,000 for the year. The City is amortizing a deferred outflow resulting
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Two long parallel wires carry currents of 10 A in opposite directions. They are separated by 40 cm. What is the magnetic field in the plane of the wires at a point that is 20 cm from one wire and 60 cm from the other? A) 3.3 10 -5 TB) 6.7 10 -6 TC) 3.3 10 -6 TD) 6.7 10 -5 TE) none of the above show work

Before taxes, Jennifer earned $833 one week after working 35 hours at her regular wage, 4 hours at time-and-a-half on Saturday, and 4 hours at double-time on Sunday. What is Jennifer's hourly wage

Do you agree that grit is the key to success? Why or why not? What does grit mean to you? Complete some additional research on the growth mindset and share what you have learned. Do you believe you have a growth mindset? Why or why not? Do you believe you have grit? Why or why not?

Determine the inverse function if they have, for each 4. r(x) = 2x. 1. f(X) = = X 5. f(x) = 3x + 7. 2. g(x) = - x2 + 4. x - 4 6. f(x) = x3+1. 3. h(x) = 2x + 3. 1 7. f (x] = x +3
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How do I solve this? Part 7 of 8 Question 7 of 8 1 Points 1 0 O W Find the value(s) of k for which the system of linear equations with augmented matrix 0 1 3 4 has no solution. 0 0 k+4 2k +8 O A. k = 4 only O B. k # 4 O C. no value of k O D. K # -4 O E. k = -4 only Reset Selection
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How can a mentor shape and complement the skills of their leader? DeJovine, B. (2013). Partnership for success - Learn how having a mentor can help you develop personally and professionally. American College of Health Executives . Retrieved November 10, 2020from http://www.ache.org/newclub/career/MentorArticles/Partnership.cfm

Jorge is converting his $100 USD to CAD at a Canadian currency exchange house. At the same time, Juanita is converting her $100 USD to CAD at the airport in Winnipeg when she arrived home. Which of the following statements would be correct? Question 1 options: Jorge will have less USD than Juanita. Juanita will have more CAD dollars than Jorge.

, sign tools chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://learning.k12.com/d21/le/drop stomer Supp... Newrow Support Class Connect LogMeln 123 Microsoft Office 365 Desmos learning.k12.. / 4.06 Mid..24R PDF Desktop Seats in a theater are curved from the front row to the back. The front row has 15 chairs, the second has 2 and the
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Refer to the ANOVA table for this regression. Source d.f. SS MS Regression 2 562, 586 281, 293 Error 19 378, 460 19, 919 Total 21 941, 046 (a) State the degrees of freedom for the F test for overall significance. The degrees of freedom for regression are______ and for error ________. CRITICAL VALUES OF F.05 This table shows the 5 percent
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Most dermatologists recommend using sunscreen that has an SPF of at least 30. The owner of a store that sells outdoor gear wondered if her customers prefer sunscreen with a higher SPF. To that end she asked a random sample of 48 of her customers what SPF they use. The distribution of SPFs of customers in her sample was not too skewed with an

A Web site reported in 2018 that 38% of all Web traffic comes from laptops and desktops. Complete parts a through d below based on if a random sample of 11 households was selected.(Round to four decimal places as needed.) a) What is the probability that exactly two households used a laptop or desktop to access the web? b)What is the probability

A toy rocket fired straight up into the air has height s(t)=192t-16t^2 a. What is therocket's initial velocity(when tequals =0)? b. What is the velocity after 4 4 seconds? c. What is the acceleration when tequals =10 10? d. At what time will the rocket hit theground? e. At what velocity will the rocket be traveling just as it smashes into

A tire company has developed a new type of steel-belted radial tire. Extensive testing indicates the population of mileages obtained by all tires of this new type is normally distributed with a mean of 43,405 miles and a standard deviation of 3,794 miles. The company wishes to offer a guarantee providing a discount on a new set of tires if the

The study results from taking blood glucose levels in mmol/l from independent groups of normal and diseased mice is given in the file ``mice_glucose.csv''. Fit a linear model to this dataset using lm(). Perform and interpret diagnostic plots for the model fit and comment on them (i.e. check the assumptions). Estimate the effect size of interest

9. Prove or disprove: For all x, ye R, if x and y are irrational, then x . yis irrational
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This component of an axial flow turbine engine is an integral part of the engine that helps reduce the chances of compressor stalls from occurring? Group of answer choices Variable Stator Vanes Exhaust Bleed Turbine Guide Inlet vane Reverse Geometry Weather Vane

Find the average rate of change of the function ((x) =Ox from x1 =0 to x2 = 4. The average rate of change is 9. (Simplify your answer)
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How do I write standard form? 0) Write an equation, in STANDARD form, for each equation with the given x-intercepts. a. (7, 0) and (-7, 0) b. (-4, 0) and (9, 0)
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A cognitive psychologist wanted to examine what kinds of learning techniques are more/less effective for brain surgeons to memorize neuroanatomy. The research obtained a sample of 13 surgeons in their third year of medical school. Each surgeon was asked to use three different learning techniques (didactic instruction, rote memorization with
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Find the due date, interest, and maturity value for a $600,000 loan made to Benson Automotive on July 31 for 7 months at 7.5 interest

A pharmaceutical company wants to determine whether its new antianxiety medication has any effect on resting pulse rate. They will use a paired sample to determine whether the mean resting pulse rate for adults not taking the antianxiety medication differs from the mean resting pulse rate for adults who are taking the antianxiety medication.

1.3 Now assume that the A monomNow assume that the A monomers interact with each other with energy (meaning they attract each other). What is the probability of the "folded" state now? What about Bonus 5 pt. For a fixed interaction energy what is the temperature at which the probability of being "folded" is 1/2?ers interact with each other with

port Exclusives Ltd. received an invoice from Dank Specialties of Copenhagen with terms 5/20 R.O.G. for the items listed below. 90 teak trays at $36.90 each 20 teak buckets at $61.70 each 35 teak salad bowls at $53.30 each 2 1 All items are subject to trade discounts of 36 3 %, 7 2%, and 4%. (a) If the shipment was received on April 21, what is

A supervisor records the repair cost for 14 randomly selected refrigerators. A sample mean of $67.58 and standard deviation of $24.65 are subsequently computed. Determine the 90% confidence interval for the mean repair cost for the refrigerators. Assume the population is approximately normal. Step 2 of 2: Construct the 90% confidence interval.

Solve for the missing variable in the formula d = rt (distance formula); d = 60, t= 12
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Nine sales representatives, 6 men and 3 women, at a small company wanted to attend a national convention. There were only enough travel funds to send 3 people. The manager selected 3 people to attend and stated that the people were selected at random. The 3 people selected were women. There were concerns that no men were selected to attend the

1.(5 points) Calculate the odds of winning the Power Ball $100 prize. In order to win, you must match 4 of the 5 winning white balls numbered 1 to 69, and NOT match the red power ball numbered 1 to 26. Write the final answer as a ratio instead of decimal fraction. For example, write instead of 0.25. 1/10 instead of 0.10. Note: There are 2 separate
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Here is an interesting Probability question: There are 30 books sent 5 persons, and each person can get 6 books. 10 of the 30 books are secondhand. All possible outcomes are equally likely. So: A = person #1 receives 3 secondhand books. B = person #2 receives 6 secondhand books. C = person #3 receives 5 secondhand books. D = person #4 receives 1

Use the frequencydistribution, which shows the number of American voters(in millions) according toage, to find the probability that a voter chosen at random is in the 18 to 20 years old age range. Response Frequency 18 to 20 4.8 21 to 24 7.2 25 to 34 21.5 35 to 44 22.6 45 to 64 52.5 65 or over 28.8 The probability that a voter chosen at random is

please help me with this NAME: ........ 3(a) (15 pts) Let {X, ,..., X48 ) be a random sample of size n=48 from a negative binomial distribution with parameters r=4, and p=2/3. Using CLT approximate P(5.5 s X
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. A small internet mail-order company keeps track of the number of orders it fills per day for many years and determines that the distribution of the variable "orders filled per day" is right-skewed and has the following five-number summary: Minimum = 20 Q1 = 32 Median = 46 Q3 = 63 Maximum = 80 Suppose we take random samples of size 40 from this

please answer the questions below they are for linear algebra \f
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ssssssssssssssssssss A recent survey asked 1320 residents whether they think their province should spend more money on vaccination efforts in general. The number of residents who agreed was 1126 . [copyrighted material] Part 1(5 marks): 1. What is the population proportion of interest here? . Describe it using words. . Write it using statistical
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Using the 2x2 table below. Calculate the risk in exposed. E NE T Disease 14 4 18 No Disease 786 896 1682 Total 800 900 1700 E = exposed NE= nonexposed T= total

The domain of the piecewise function is ( - co, co). 4x if x
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Could you assist me with this question, please? Question 4 Let E || man:- 24 u 64,v=1 12 1 Determine if v is an eigenveetnr of M. If it is, what is the corresponding eigenvalue
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Question 12 10 Pol A bacterial population has an exponential growth rate of 11.did per hour, If there were 480 bacteria initially what would the Attend population be pier s hours? A y = 9-40 B Y = 840 y = 480 D y = 750
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In 2010, the population for Terre Haute was 60691 and for Fort Wayne was 262450. Using Terre Haute as the reference, find the relative change comparing Fort Wayne to Terre Haute. Which best describes the relative change? A. Fort Wayne 's population is 23.1 % more than Terre Haute 's population B. Fort Wayne 's population is 332.4 % more than Terre

Federal Rent-a-car is putting together a new fleet. It is considering package ofers from three car manufacturers. Fred Motors is offering 5 small cars, 5 medium cars, and 10 large cars for $500,000. Ac Motors is offering 5 small, 10 medium, and 5 large cars for $400,000. Chrysalis is offering 10 small, 5 medium, and 5 large cars for $300,000.
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48. Which of the following is most appropriately displayed With a frequency table? A. What percentage of people prefer Hunt's brand ketchup B. The relationship between gender and job performance C. How much explanatory value comes from the study's variables D. The home location of the most valuable customers E. The relative effectiveness of ads in
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Let G be a group, let d1 be an integer, and define a subset of G by G[d]= {g G : gd = e}. Deduce that if G is commutative, then G[d] is a group

A suburban hotel derives its revenue from its hotel and restaurant operations. The owners are interested in the relationship between the number of rooms occupied on a nightly basis and the revenue per day in the restaurant. Following is a sample of 25 days (Monday through Thursday) from last year showing the restaurant income and number of rooms

Weekly Quiz Question 10 of 10 Simplify the algebraic expression K BX - 515 -(6 -2x)] Bx - 515 -(6- 2x)] = (Simplify your answer.)ning and its Apps - USADL - Winter 2023-2024 Manisha . 03/11/24 1:2 ly Quiz Question 9 of 10 This quiz: 10 point(s) possible This question: 1 point(s) possible Sub K An alligator's tail length is proportional to its body
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I need help with following problem. Thank You. Explain why a hypothesis test maybe used to test whether the mean tax rates for the two genders differ. Select all that apply. A) Each sample is a simple random sample. B) Each sample size is large. C) Each sample has the same sample size D) Each sample is obtained independently of the other E) Each
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3. Use one of the listed items to complete this sentence. The rafters are supported on the ___________ . 0 Top plate ' strut ' roof battens ' rafters ' ceiling joists ridgeboard ' underpurlin " strutting beam
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true statements. 83 is a prime number. 84 is a multiple of 47. 8 is a factor of 85. 86 is a composite number. 87 has exactly 2 factors. Question at position 19 19 1 point Question at position 19 Tamara says that factors and multiples are related. Which statement is true about the equation 5 8 = 40? Tamara says that factors and multiples are

Advanced Mathematical Decision-Making Travelling Salesman Project Suppose a salesperson needs to travel to four different cities to promote a product for his company. His company is headquartered in Atlanta (A) so he'll need to begin and end his trip there. He also needs to visit Birmingham (B), Cincinnati (C), and Detroit (D). He wants to find
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Please provide with full answers and explanations, thank you! \f
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Can u give me an explanation on how you found the answers to number 2 and 3 Shown below are the scatter plots for four different data sets. Answer the questions that follow. The same response may be the correct answer for more than one question. 10 10- X X 0 36 7 6 9 1011 Figure 1 Figure 2 Figure 3 Figure 4 1. Which data set indicates the
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What is the equivalent relation of the binary relation represented by the following relation matrix? (Just ask if). b) 0
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This question is about information theory. Please check the image.

Here is a code for removing stop words: unlist(x)[!(unlist(x) % in % stopwords( 'en' ))]) Modify the lines of code so that the stop words are not removed before calling table. Instead, modify the code so that the stop words are removed from the table (an R list) after computing the counts of each word. Thank you. (use r to write the code)

Last year, Bob deposited $4000 into an account that paid 7% interest per year and $ 1000 into an account that paid 4% interest per year. No withdrawals were made from the accounts. Answer the questions below. Do not do any rounding. (a) What was the total interest earned at the end of 1 year? (b) What was the percent interest for the total
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What is the most appropriate statistical analysis for Experiment #4? Group of answer choices Independent samples t-test One-way ANOVA 2 X 2 ANOVA Chi-Square

7. [ Maximum Mark: 7] : The diagram shows a hexagonal prism of height 12 cm. The edges of each hexagonal face have length 4 cm. 4 cm 12 cm a Draw a net of the prism. (2 marks) b Calculate the volume of the prism. (3 marks) c Calculate the total surface area of the prism. (2 marks) 8. [Maximum Mark: 12]
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In the following right triangle, find sin A, cos A, tan A, and sin B, cos B, tan B. sin A = COS A = tan A = sin B = COS B = tan B = B 3 X C X A
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7. Show that the renewal process with uniformly distributed interarrival times does not have independent increments. Precisely: Let {Xx}x21 be i.i.d. random variables uniformly distributed on the open unit interval (0, 1), So = 0, Sn = X1+ . .. + Xn the time of the nth arrival, and Nt = max{n 2 0 : Sn
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problem 1: it is better to provide analytical graphs, using statistical tools such as Minitab. In an experiment to study the compressive strength of concrete. The factors are mix (A), time (B), laboratory (C), temperature (D), and drying time (E). The experiment was planned to run in two major steps. The response is the compressive strength of the
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a. Purchases 110,000 20. Input Tax (123.200 x 3/28) 13,200 21. Accounts Payable 123.200 b. Purchases 96.800 22. Accounts Payable 96,800 C. Purchases 83,600 23. Input tax 13,200 24. Accounts Payable 96.800 d. Purchases 110,000 25. Accounts Payable 110.000
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2. (2 points) If you were in Fred Holloway's position, would you accept or reject the new product line? Explain
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19. Which of the following is true about all Normal distributions? a. There is no area under the curve for z-scores greater than 3.49. b. The area underneath the curve is equal to 1. C- The points at which the curvature changes from \"up\" to \"down\" (the points of inection) are at the rst and third quartiles of the distribution. (1. About 68% of
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Q; Two cars are leaving New Jersey. One car is going north and the other is going south. After 4 hours, the cars are 396 miles apart. If one care is traveling 5 miles faster than the other car, what was the speed of each car? Q; Please calculate the Domain and Range for the following: (2,4), (0,0), (-7,10), (10, -7) Q; Please use the Substitution

1.The coefficient 8.469 of the variable "Period" tells me that a.There is no linear trend in the time series because it is greater than alpha b.The time series is increasing on the average c.The net change of the time series in season 1 is 8.469 + 12.413 D. Has no meaning unless we know what season took place at t=1 Standard Lower Upper Lower
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please refer to attachment Which of the following statements about the Pearson correlation coefficient between variables X and Y is true? O None of these. O Changing the units of X and Y will not affect the value of r. O The farther away r is from zero, the weaker the linear relationship between X and Y. O If r = 0, then knowing X helps when
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Find Standard Deviation for the data given. (choose closest answer). Round your answer to two digits after decimal. 4 x H O 2.71 O none of these answers O 7.37 O 6.94
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Which of the following contains a prepositional phrase with an adjectival function? Group of answer choices They boarded the flight to Brussels. They traveled to Madrid by train. She wants the law to pass. We'll meet tomorrow by the fountain

L point-slope form. Write an equation for line L in point-slope form and slope-intercept form. L is parallel to y = 4x. 6- Ayy = 4x O 4 Q X 6 6 (21-4
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Can someone help me with this? Find cos 9, where G is the angle shown. Give an exact value, not a decimal approximation. cost? = I] In the figure below, AXYZ ~ AABC. Find sinB, tan B, and cosB. Round your answers to the nearest hundredth. A X 38.5 C Y 13.2 40.7 Z B sin B = X 5 tan B = COS B =
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could not copy and past, see img below Recall that the probability of obtaining k Heads in n independent coin tosses is (E )pl'(1 p)"'l', wherep is the probability of Heads for any given coin toss. '1 Find the value of 2 (:)pl'(1 p)"'l'. (Your answer should be a number.) k=0
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Please help for problem below with typewritten explanation. Make a determination if there is a difference in test scores between children receiving tutoring and those self studied. Sample 1(Tutored): n1=8, x1=97.25, s1=3.65 Sample 2 (Self-studied): n2=12, x2=87.25, s2=9.60 In the population, what is the difference between the tutored individual's

Question 1. W 1. Solve the following differential equation by separation of variables. dy = 5x* tan(y) dx O y = sin 1(ec+525/5) O y = sin 1(e525/5) + C O y = eBa /5 + C O y= ec+ 5x5/5I:I 0 2.4 21-year-old student is offered an opportunity to invest some money in a retirement account that pays 7% annual interest compounded continuously. How much
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There are three methods to evaluate interventional process: quantitative, qualitative, and mixed. Briefly describe each method and discuss strengths and weaknesses of each method. How can the data gathered using each method be harnessed to support the timing of change initiatives? Explain. Ensure to use two peer review articles with intext

12IN H. GIVEN FIND : (5pts. 30 IN EACH 1. LATERAL SURFACE AREA - 2. VOLUME
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The linear trend Yt = 120+ .2twas estimated using a time series with 20 time periods. The forecasted value for time period 22 is?

Use the price-demand equation below to find the values of p for which demand is elastic and the values for which demand is inelastic. Assume that price and demand are both positive. x = f(p) = 455 - 35p i) Demand is elastic for all values of p in the interval D (Type your answer in interval notation.)
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The two samples below are independent from Normal populations with equal variances. Sample 1: n=18, x=384, (x^2)=8435 Sample 2: n=13, x=226, (x^2)=4178 Test the hypothesis that 1 2 at alpha=0.025 (in terms of 1-2.)!! Q1: What is Ho and Ha? Q2: What is the critical value, test statistic, and pvalue? Q3: What is the 90% confidence interval for the

Please help me with this assignment MA1200 A2 F23 Assignment 3 Name: Total Marks: 30 Due Thursday September 28 1. [11] Given A = $ 1 21. B= [4 10 0 1/21, c = 0 12] 5 D = 3 0 and -2 3 0 - 9 ; 2 3 -61 Find the following (some of these might be undefined): a) a23 b) d23 C) A + B d) ET + 413 e) 2B - 3D f) x, y, z and w such that [x - y 2w - 6 =C 4-z
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Pedro performed an experiment aiming to delay dementia symptoms in older adults. In this study, Pedro created three random conditions: A) A group attending yoga class, B) A group attending weight lifting, and finally, C) A group attending nutrition classes. Pedro measured the working memory capacity at the end of the study as a dependent variable.

A random sample of households is taken. For each household, the number of hours spent watching television and the power consumption (in kWh) during a day are recorded. The table below shows computer output from a linear regression analysis on the data. 9. A random sample of households is taken. For each household, the number of hours spent
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Question 13 of 35 Write a formula for a linear function f(x) that models the situation, where x is the number of years after 2004. i i In 2004 the average adult ate 54 pounds of chicken. This amount will increase by 0.6 pounds per year until 2009. i '1 , ,7 , { What is the iinear function for)? {(x) = D (Use integers or decimals for any numbers in
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Instructions on screen ON 1 point Given Segment AB is tangent to OC at point B, what is the circumference of OC'? O 167 O 307 O 3474 O 347
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