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Mathematics Questions and Answers September 18, 2021

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10. (2 points each) For each of the following statements, determine whether it is truc or false (circle the answer; you don't need to show any work). (a) True or False: Two vectors are parallel if and only if their cross product is zero. (b) True or False: Two vectors are perpendicular if and only if their dot product is Zero. (c) True or False:
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skeletal muscles are surrounded by ___ each musckle is made of many B. each B is surrounded by ____. each B is made of many D. each D is surrounded by_____ and a plasma membrane, the ____. each D is made of many G. each G is surrounded by _____. each G is made of many _____ that are attached end to end

In the Ponzo illusion, the primary finding is that people tend to do what? Click or tap a choice to answer the question. estimate the line lengths accurately learn that line lengths are relative overestimate the size of the line that is framed to appear closer underestimate the size of the line that is framed to appear closer

The peanut crop was harvested from five fields of various area. The following data are the mass of the crop from each field y (in kilograms) and the field area x (in hectares). Problem 1. The peanut crop was harvested from five fields of various area. The following data are the mass of the crop from each field y (in kilograms) and the field area x
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The following table compares the completion percentage and interception percentage of5 5 NFL quarterbacks. Completion Percentage56 56 58 58 60 60 61 61 64 64 Interception Percentage5 5 3.5 3.5 3 3 2.5 2.5 2.5 2.5 Table Copy Data Step1of5: Calculate the sum of squared errors (SSE). Use the valuesb 0 =21.4971 b 0 = 21.4971 andb 1 =0.3043 b 1 =

Data file https: / /docs.google.com/spreadsheets/d/ 1 J8NDkk_5IyEjo6Yh78-yU0MHIRrxR3etRy5HY6Iielk/edit?usp=sharing Consider the example of a credit card company that has a database of information provided by its customers when they apply for credit cards. An analyst has created a multiple regression model for which the dependent variable in the
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The tobacco industry closely monitors all surveys that involve smoking. One survey showed that among 785 randomly selected subjects who completed four years of college, 18.3% smoke (based on data from the American Medical Association). You need to construct a 98% confidence interval for the true percentage of smokers among all people who completed

Do not use any Mathematico functions for this question, other than for plotting. a) Solve the following continuous dynamic system with the given initial value _\\ % = (21 33))? 7(0) = (5) [10 marks] Express the eigenvalues and eigenvectors using decimal numbers, to 2 decimal places. b) Plot the phase portrait for this system using Mathematica.
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Given a 2-tailed significance level of .05, what conclusion can be made for each test ( please be thorough by referring to the group and variable names themselves here variables in first pic ex: AQAttDet)? second pic is rest of output from SPSS What is your sex? N Mean Std. Deviation Std. Error Mean AQAttDet Male 107 24.86 4.475 .433 Female 223
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Q1 Using the dataset IDS-DATASET[1], apply the rule of five, and identify the median duration of the package required to detect a security breach. File: IDS-DATASET.csv Linke for file to download:https://we.tl/t-wDgHNwJAav the answer, the calculus, and a explanation of your solution (calculus).

The graph shows f(x)= x+1/ x1 and h(x)= (x2) ^2+3. What is the solution tof(x)=h(x)?

3. [Use data from problem 1] Conduct a t test to test the hypothesis that mean value of Z1 equals mean value of Z2 in the population. The p value for this test is: C 0.0063 C 0.063 6.3 0.63
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Let 7 H Co A = 9 -J 9 2 NO a -3 and v = b under T. Define the linear transformation T : R3 - R3 by T(a) = Ax. Find the images of u = T u) = T(v)
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The BiltWell Construction Company has submitted a bid on construction of a new spa deck. If their $9350 bid includes $2320 forlumber, what percent of the bid was thelumber?

If an experiment is repeated more and more times, the theoretical probability of an event tends to get closer to the empirical probability of that event. Question content area bottom Part 1 Choose the correct answer below. A. The statement is true because the theoretical probability of an event tends to get closer to the empirical probability of

I have a company that has an operation in India and they earned revenues of 5,982,145 in Rupees. How much does that equate to USD

Case 1 In the "current" tab Assessments, Quiz 2 has been checked. Now we'll press update. If we go to the "completed" tab, we should see that the "quiz2" assessment is now added to the Completed Assessments. We should also see this change in the file. Current I Completed I Upload Current I Completed | Upload List of Current Assessments List of
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4. A line has slope 3 and y-intercept 5. This line is the graph of which equation? 3x + y = 5 3x - y = 5 3x + y =-5 3x - y = -5
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Write a Java program with a single-dimension array that holds 10 integer numbers and identify the maximum value of the 10 numbers. Next sort the array using a bubble sort and display the array before and after sorting. Step 1. Create an algorithm {either flowchart or pseudocode) that you will use to write the program. Place the algorithm in a Word
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(e) A caveat is defined as a caution or warning. The Orlando Sentinel article listed the following two caveats for this study: (1) The study was funded by the manufacturer of Celebrex. (2) The study lasted just six months and most arthritis patients take pain relievers for longer periods of time. Comment on why these are caveats for this study
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Principal Diagnosis: _M86.672_________________________POA: ___________ Secondary Diagnosis: ____Z82.49_____________________POA: ___________ ___E78.5______________________POA: ___________ ___Z95.1______________________POA: ___________ ____I10_____________________POA: ___________ ___I25.10______________________POA: ___________

In this discussion, you are assigned two rational expressions to work on. Remember to factor all polynomials completely. If you want to refresh your factoring skills, review sections 5.1 -- 5.6 in your e-book. Read the following instructions in order and view the MAT222 Week 1 Discussion Example Download MAT222 Week 1 Discussion Example to

Any arrangement in which nonoverlapping figures are placed together to entirely cover a region is called a _____. Multiple choice question. convex set central angle tessellation concave set

Figure is not drawn to scale. 16 m 17 m 13 m What is the surface area of the aquarium, including the sides and bottom but not the top
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Determine the coefficient of eachterm, the degree of eachterm, the degree of thepolynomial, the leadingterm, and the leading coefficient of the following polynomial. x 5 + x 4 the coefficient of term x 5 is __________?

Let X and Y be two random independent variables with X = 120, X = 22, Y = 360 and Y = 27, find: . 1. E(4 X 1 Y + 220) = 2. Var(4 X 1 Y + 220) = 3. SD(4 X 1 Y + 220) =

A survey showed that 79 79% of adults need correction(eyeglasses, contacts,surgery, etc.) for their eyesight. If 15 15 adults are randomlyselected, find the probability that at least atleast 14 14 of them need correction for their eyesight. Is 14 14 a significantly high high number of adults requiring eyesightcorrection?

All airplane passengers at the Lake City Regional Airport must pass through a security screening area before proceeding to the boarding area. The airport has three screening stations available, and the facility manager must decide how many to have open at any particular time. The service rate for processing passengers at each screening station is
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The Z score that cuts off lower 15% of distribution is___________? Please explain how you solved for the answer. a. 1.28 b. -1.96 c. 1.645 d. -1.03

What is the speed of the boat in still water? The speed of a stream is 4 mph. If a boat travels 90 miles downstream in the same time that it takes to lravel 45 miles upstream, what is the speed of the boat in still water? 0 A. h8 mph 0 B. 14 mph 0 C. 15 mph 0 D. 12 mph
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Find the exact value of each of the remaining trigonometric functions of 0. 24 5 5 cose=g, 270"
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Suppose that that 65% of Californians prefer Starbucks over Peet's Coffee. We take a random sample of Californians and find that 145 out of 200 Californians prefer Starbucks over Peet's coffee. What is the sample proportion of Californians that prefer Starbucks over Peet's coffee

Park officials make predictions of times to the next eruption of a particulargeyser, and collect data for the errors(minutes) in those predictions. The display from technology available below results from using the prediction errors to test the claim that the mean prediction error is equal to zero. Comment on the accuracy of the predictions. Use a

Suppose that we wish to assess whether more than 60 percent of all U.S. households in a particular income class bought life insurance last year. That is, we wish to assess whether p, the proportion of all U.S. households in the income class that bought life insurance last year, exceeds .60. Assume that an insurance survey is based on 1,000

To determine whether a new sleeping pill has an effect that varies with dosage, a researcher randomly assigns adult insomniacs, in equal numbers, to receive either 4 or 8 grams of the sleeping pill. The amount of sleeping time is measured for each subject during an 8-hour period after the administration of the dosage. What type of design is this,

Identify an accurate statement about a Latin square that is used to counterbalance the order of the conditions in a repeated measures design. Multiple choice question. The number of orders is equal to the number of conditions. The number of participants tested in each order can be unequal. There should be at least two participants per row. Each

Lulu started saving $200 / month in a 401(k) earning 6% interest compounded monthly when she was 45 years old. How much will be in her account when she retires at age 65
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find the solution of the given initial-value problem d2 y dy 4 + 4y = 0 dt2 dt y (0) = 1, y' (0) =
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Find the slope after using implicit differentiation to calculate dy/dx. ______________________________________________________________________________________________ 1. 3y2 = 4x3 Slope at P(3, 6) Points where slope is zero. Points where slope is infinite.

How do I write the equation in logarithmic form for 2 4 = 16

this is a three part question. this is the second part. This Question: 1 pt 7 of 10 (8 complete) V This Quiz: 10 pts possib Consider the distribution of the annual rainfall in 100 cities selected randomly throughout the United States. Complete parts (a) through (d) below. OA O B. O c. OD. Of O O O O A O c. What shape would you expect for the
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5b. How many times does a tire with a diameter of 16 in. rotate when it travels a * mile? **Tip: As there are 63,360 inches in each mile, 63,360 divided by circumference = number of full rotations. Round up to the next whole number. 0 631 rotations O 1980 rotations 1260 rotations O 100 rotations 6a. What is the circumference of a tire with a
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Please solve these questions? I'm not really good at math. Please explain easily. Thank you, tutor, in advance. 4. Graph the function defined as: f (x) = -x, for x
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A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within 4 4 percentage points with 90 90 % confidence if (a) he uses a previous estimate of 24 24 %? (b) he does not use any priorestimates?

A year is not an even number of days; it is (a) _____ days (Four decimal digits needed in your answer.). To make our calendar work we use (b) ____days for most years, but add an extra day every year divisible by (c) ____ , except we don't add the extra day if the year is a century year (i.e., ends in 00) not divisible by (d) _____

Questions. (1) (5 marks) True or False? Justify your answer. Answers without correct justification will receive no credit." (a) Let A, B, and C be two square matrices of the same dimension and A be an invertible matrix then (A BCA) 2023 - A-1 B2023 2023 A. O True O False Justification: (b) Let A be an n xn matrix. The set of all n x n matrices X
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Pls answer with work shown thank you! The total body surface area, or BSA, of a human is difficult to calculate. There are various models that estimate BSA based on a person's weight and height. One simpler model is BSA = wh 3600 where w = weight in kg and h = height in cm. a. Using this model, estimate the height of a person who weighs 75 kg and
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1.Different ways of delivering surveys have different challenges. For example, the census delivers its survey by mail, but has difficulties collecting data on homeless people (who have no fixed address) and undocumented immigrants (who do not answer for fear of legal repercussions). List at least two practical difficulties involved in getting

3. Let n 2 t 2 0. Recall that dy is the number of derangements on {1, 2, . .. , r}, and dr, is the number of permutations of {1, 2, ... ,r} with exactly s fixed points (so in particular, dro = dr. Give a combinatorial proof of each equality. a) dn,t = (7 )dn-t b) n! = Et-odn,t
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I know the following problem is a network modeling, however I don't know where to start formulating the Karen is in charge of internship assignments for all students at Northwestern. Karen understands that there is a limited supply of Northwestern students from either the College or the Analytics School. The four main locations she can assign to

i. Based on your answer to part a-i, state your decision with respect to H0 and provide a conclusion. (1 point) According to part a-i, p=.1179 is greater than set alpha level of .05 thus we retain H0 and can say that there is no significant difference in mean proportion of correct responses on no flicker trials. ii. Based on your answer to part

Suppose that the functions q and i are defined as follows. q (x) =x+9 r (x) =Vx+8 Find the following. qor (8) OVO (r . 9) (8) - 1 X
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What is the connection between gender and the influence of MI patient's length of hospital stay? The independant variable is gender and dependant is length of stay? Is that correct?

Given P(ac) = 23 + 4x + 4x + 16. Write P in factored form (as a product of linear factors). Be sure to write the full equation, including P(x) =
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. Determien whether the following are subspaces of the given vector spaces. Clearly explain your reasons. (a) W = {56 Ralmg = 1} where R3 = \"31,32, $3)|mg- E R,i=1,2,3}. (b) W = {A E anlA1 exists} where MM. is the vector space of all n x in. matrices with real entries and the usual operations. 6 3 1 . Determine whether the set S = 7 3 2 , 3 spans
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Asnwer each part in detailed explanation Only handwritten solution 1 let a, = 3, andl = 3 ( 1 4an ) 3 fan them show that (=53. let ana buti where bizb, 2less butz = but buff , Show that 13 itss3 let Abe man COC /V ( is ge A2 : 0, prove that in is singular ( ii) 91 4 2 = A , and At In , prove that . A is singular (4 ) let AE M (f ). & At - - A
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A transportation organization hoped that they could measure the weights of big trucks without actually stopping the vehicles by using a newly developed?"weight-in-motion" scale. To see if the new device was?accurate, they conducted a calibration test. They weighed several stopped trucks?(Static Weight) and assumed that this weight was correct.
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A researcher wishes to estimate the proportion of adults who havehigh-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.01 0.01 with 90 90 % confidence if (a) she uses a previous estimate of 0.58 0.58 ? (b) she does not use any priorestimates?

Claim: The mean pulse rate(in beats perminute) of adult males is equal to 69 69 bpm. For a random sample of 165 165 adultmales, the mean pulse rate is 68.4 68.4 bpm and the standard deviation is 10.7 10.7 bpm. Find the value of the test statistic. The value of the test statistic is nothing . Claim: The mean pulse rate (in beats per minute] of
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In a survey of 2075 2075 adults in a certain country conducted during a period of economicuncertainty, 62 62 % thought that wages paid to workers in industry were too low. The margin of error was 4 4 percentage points with 90 90 % confidence. For parts(a) through(d) below, which represent a reasonable interpretation of the surveyresults? For those

exercise 6 5. Use Cramer's rule to solve the following equation system: 2x + 6y = 6 3x - y = 2 6. For the equation system above, find the inverse of the coefficient matrix, and get the solution by the formula x* = A-'d
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8. The path of a rocket is given by the equation, h: 3 t2+12 t+15 , where 'h' is the height in meters and 't' is the time in seconds. What was the height of the rocket before it was launched? At what time does the rocket reach its maximum height? What is the maximum height of the rocket? When did the rocket hit the ground? What was the height of
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please find attached my Question in PDF and Word file, please solve this ASAP ThANKS Note: You should answer only 2 questions for each CLO (highlighted ) If you cant answer it then you can choose alternative Q but in the same CLO . Short essays/ essays- Accounting theory CLO1 1. Political factors played a role in the development of accounting.
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Some common considerations that must be taken into account when drawing inferences from a sample group are ________ that may impact responses. Group of answer choices a. psychological factors b. political ideologies c. social biases d. guided questions

The discrete form of the equation is x_(n+1)=x_n*(1+*ln(K/(x_n))) for positive parameters and K

The price to earnings ratio (P/E) is an important tool in financial work. A random sample of 14 large U.S. banks (J. P. Morgan, Bank of America, and others) gave the following P/E ratios. 24 16 22 14 12 13 17 22 15 19 23 13 11 18 The sample mean is x 17.1. Generally speaking, a low P/E ratio indicates a "value" or bargain stock. Suppose a recent

Directions: Use Excel to compute the Regression Line. Problem: Using the following set of data and Excel, compute the regression line. The data set represents the number of hours of training to predict how severe injuries will be if someone is injured playing football. Briefly summarize your findings.RESULTS (MAKE SURE TO INCLUDE):1.IDENTIFY THE
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Indique el puntodepivote deentrada para la tabla inicial simplexdelsiguienteproblemade programacin lineal: Maximize: z = 3 x 1 + 9 x 2 Sujetoa: - x 1 + 4 x 2 <14 9 x 1 + 6 x 2 <11 x 1 >0, x 2 >0

5. Stanley is purchasing old VHS movies on Amazon for $1.25 each and $30 to spend. If they apply a 7.5% tax and an additional 10% of the total (with tax) for shipping, how many movies can he purchase? Set up and solve an equation to answer this question. 6. Harry has been staying up all night with his friends studying for their Potions Exam. He
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Date: 2022-02-24 Question 1 [5 points] $44.05 was the initial price of shares for a company and $64.85 was the final value, what was the percent change in the price of the shares? dicate a loss with a negative percent change. Note: Please make sure your final answer(s) are in percentage form and are accurate to 2 decimal places. For example 34.56%
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State the domain, vertical asymptote, and end behavior of the function. h (2) = -log (3x - 8) + 4 Enter the domain in interval notation. To enter oo, type infinity. Domain: 83 As x approaches the vertical asymptote, h ( 20 ) -+ _ h ( 20 ) -+ _ As x approaches
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Guadalajara Tours' daily sightseeing trip has a capacity of55 people. Each day, tour officials record the number of people making the trip. The data for a selection of21 summer days are as follows. = O DESCRIPTIVE STATISTICS Mean, median, and mode: Comparisons Guadalajara Tours' daily sightseeing trip has a capacity of 55 people. Each day, tour
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Find the indefinite integral by using the substitution x = 5 sec{#). (Use C for the constant of integration.) v x? 25 dx X
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Save Complete the table shown to the right for the population growth model for a 2006 Population (millions) Projected 2043 Population (millions Projected Growth Rate, certain country. k 31.4 41.1 K = (Round to four decimal places as needed.)save 2007 Complete the table shown to the right for the population growth model for a Projected 2038
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Comm Consider the following scenario of a hotel owner's nancial ventures. Answer each of the given questions in the Excel file. Ziad wants to open a small boutique hotel in 5 years' time. The building he wants to buy for this project' Is worth $22, 000. 000. He knows that he ll need a 15% down payment for the building, and he' s budgeting an
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The graph of y = /(@) is given below. Answer each of the questions below the graph. -7 6 5 4-3 -2 -1 3 5 5 6 7 5 9 -7 A) What is the domain of /(@)? Give your answer using interval notation. B) What is the range of /(@)? Give your answer using interval notation. () What is/are the *-intercepts of f(@) ? Give your answer(s) in coordinate form (i.e.
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Find z1/z2 in Polar Form z1= 21cis (135 degrees) z2= 3cis (75 degrees)

A company maufacturing both Agassi and Sampras models of tennis raquets has found that the respective demand equations are pA= 50+5x-8y Ps= 80-12x+5y when x is the weekly demand for an Agassi raquet priced at $pA and y is the weekly demand for a Sampras raquet priced at $pS. What is the weekly revenue R from the sales of these raquets? 1. 5x^2+

Rico had been offered two jobs from two different companies. Company A offered her 5.25% commission on all his sales, while Company B offered a 4% commission with a monthly salary P6,000 on his sales. a. If his total sales is P80,000, how much is his gross pay in Company A? Company B? b. If you were Rico, which job will you accept? Expl

Adrian is a millennial, meaning he was born between the years 1981 and 1996. His cousin, Bella, is 3 years older than half Adrian's age. Is it possible that Bella is a millennial?

1.The following presents a headline in a local newspaper, as well as the story summary. Discuss whether the headline accurately represents the story. Headline: "Drugs Shown in 98% of Movies" Story Summary : A "government study" claims that drug use, drinking, or smoking was depicted in 98% of top movie rentals (Associated Press).

Probability that is based on situations in which we observe how frequently an event occurs is called

Psychology Statistic Questions: 1.Suppose you conduct an experiment with 24 subjects and yourturns out to be 2.92, which is statistically significant at the alpha level of .05. What is the correct way to report your results? 2.Identify the IV and the DV in each research question or the x variable and the yvariable. A memory researcher is

If the mean anxiety score is 600 and the standard deviation is 100: a. What percentage of all anxiety scores fall between the scores of 400 and 800? (1 pt.) b. Approximately what percentage of the clients in the sample have an anxiety score over 900? (1 pt.) c. At approximately what percentile will the score of 500 fall? (1 pt.) d. You have an

Page 1: A 2 3 Question 6 (1 point) Use the picture provided and determine the distance of side "x". Report the number only, no units needed. 4 X = ft 12 ft 7 8 9 3 ft 10 ft Main Content 5 ft
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The contingency table below shows results from a study about whether there was an association between mobile phone use and eye cancer. Complete parts (a) through (c). Eye Cancer and Use of Mobile Phones Mobile Phones Cases Controls Yes 20 51 No 104 425 Total 124 476 a. Ine study was retrospective. Explain what inis means. A. The study followed

The pattern 1,8,27,64,125,... is a cubic pattern. What is the greatest number in the pattern that is less than 10^4

Find the volume of each figure. Show all your work and round your answers to the nearest tenth, if necessary. 1) 3 yd 2) 2 yd 11 mi 10 ml 3) 14 cm 14 cm 22 ft 6) 5) 12 It
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Choose between the indicative and subjunctive form of the verbs in parentheses to complete the sentences. Haba una posibilidad de que mi amiga y yo Answer 1 Question 2unas vacaciones en Punta del Este. Los boletos de ida y vuelta Answer 2 Question 2 1.200,00 dlares por persona. Ojal que Answer 3 Question 2 pagarlos. Crea que los hoteles Answer 4

need help with this calculus problem. Picture attached. For this week's discussion, you are asked to generate a continuous and differentiable function f (x) with the following properties: - f (m) is decreasing at a: = 6 - f(;c) has a local minimum at as = 2 - f (ac) has a local maximum at a: = 2
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4. In a recent publication, it was reported that the average highway gas mileage of tested models of a new car was 34.2mpg with a standard deviation of 1.5 mpg, with the mileages approximately normally distributed. H0 : = 34.2 Ha : < 34.2 Part a: Describe a Type II error in the context of the hypothesis test. Part b: If a simple random sample of

The following data (Bottles.xlsx) represents the amount of soft drink filled in a sample of 50 consecutive 2-liter bottles. At the 0.05 level of significance, is there evidence that the mean amount of soft drink filled is different from 2.0 liter? Specify the null hypothesis and the alternative hypothesis. State whether you are using a one- or
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. Calculate the estimated Interquartile range for the data? Question C2 The table below shows the distances (to the nearest km) travelled to work by the 50 employees in an office. Distance (km) Frequency 0-2 16 3-5 12 6 -10 11 - 20 8 21 - 40 4 a. Copy and complete the table 2] b. Which class is the modal class? [2] C. Represent data as a
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Perform a building code analysis to determine the if the building meets the code and therefore may get a building permit. Assume the height of the building meets the requirements. Determine: 1. Maximum allowable height of the building 2. Maximum allowable No. of Stories 3. Allowable area factor 4. Frontage Index factor 5. Maximum allowable area

Company XYZ is considering setting up factories in two of four countries in which legislation and institutional setup affecting its business is basically the same. Preliminary information on similar ventures gathered from specialized publications suggests there may be differences in the profitability of each country, considering all other factors

4. Using the graphical polygon method, neatly construct a graphical solution for the three force vectors. Measure the resultant in magnitude and direction. Record your answer in Table III. Attach this graphical solution to your lab report. 5. Calculate the magnitude and direction for the resultant using the analytical method of summing X and y
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I have no idea how to solve this. 3.56 When a balanced coin is flipped 10,000 times, find the lower bound of the probability that the proportion of heads obtained will fall between 0.45 and 0.55
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American Rubber Company is planning to invest in a new assembly plant in Akron, Ohio. The plant requires an initial cash outlay of $100,000,000 dollars. Cash flows from operations are expected to be $30,000,000 every year for the next eight (8) years at which time the plant will be disposed generating a terminal cash inflow of $20,000,000. If
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Which of the following would be the most appropriate strategy for a teacher to use when helping a student with a learning disability in mathematical reasoning or applied mathematics to solve word problems? A.Circling key words in problems because they often signal specific operations.B.Asking the students to recall similar problems that the class

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