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Mathematics Questions and Answers September 20, 2021

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Below are the jersey numbers of 11 players randomly selected from a football team. Find the range, variance, and standard deviation for the given sample data. What do the results tell us? Below are the jersey numbers of 11 players randomly selected from a football team. Find the range, variance, and standard deviation for the given sample data.
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High School Competency Test A mandatory competency test for high school sophomores has a normal distribution with a mean of 420 and a standard deviation of 89. Round the nal answers to the nearest whole number and intermediate z-value calculations to 2 decimal places. (a) The top 8% of students receive $500. What is the minimum score you would
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Suppose that an outbreak of cholera follows severe flooding in an isolated town of 7122 people. Initially (Day 0), 46 people are infected. Every day after, 10% of those still healthy fall ill. How many people will be infected by the end of day 11
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4. Employees of a local college have been classied according to gender and job type. Calculate the following: a. Complete the contingency table above. This is a total contingency table. You will need a row and column contingency tables as well to answer some of the questions below. You only need to show the total contingency table on the exam, but
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How do you know if a probability event is independent and you can use the multiplication rule or not?

Demand for an item is projected to be 260 units per month. The monthly holding cost is $2 per unit, and it costs $50 to process an order.

calculate the distance from observation 10 and observation 4: calculate the distance from observation 10 and observation 20:calculate the distance from observation 13 and observation 4:calculate the distance from observation 13 and observation 20: (b] Using the following data on the Observations 10, 13, 4, and 70, confirm that the complete:
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12 A random sample of 839 births included 431 boys. Use a 0.01 significance level to test the claim that 51.4% of newborn babies are boys. Do the results support the belief that 51.4% of newborn babies areboys? Identify the test statistic and p value for this hypothesis test. The test statistic for this hypothesis test is (Round to two decimal

Compute y and dy for the given values of x and dx = x . y = x 2 7 x , x =6, x = 0.5 y = dy = 2. Find the differential dy . y = e x 5 dy = (b) Evaluatedy for the given values of x and dx . x = 0, dx =0.01 dy = 3. Find the differential of each function. (a) y = tansquare root(7 t) dy = (b) y =5 v 2 /5+ v 2 dy = 4. Verify the given linear

4 Three-Legged Race You are a teacher for two classes, each of n students. You are organizing a three-legged race, where students are paired with students in the opposing class. Each student must be paired up, and each student will only be paired with one other student. In an ideal three-legged race, you and your partner are evenly matched in

If anyone could help me find the answer to this problem, it would be most appreciated! What formula would be used to calculate the left rectangle approximation of (5 in x . cos x)dx using four subintervals? ( L4 = sin(O)cos(0) + sin([jcos([) + sin()cos(m) |+ sin(3# jcos(3 ) O L4 = ()|sin(O)cos(0) |+ sin(Fjcos(7) + sin(m)cos(m) + sing )cos(3)]| O
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13 A genetic experiment involving peas yielded one sample of offspring consisting of 408 green peas and 161 yellow peas. Use a 0.01 significance level to test the claim that under the samecircumstances, 25% of offspring peas will be yellow. Identify the nullhypothesis, alternativehypothesis, teststatistic, P-value, conclusion about the

MATH29 (show work for full credit) EXAM 3 CH23-25 7) Without using a formula for trapezoids, find the area of the given trapezoid by breaking it up into other shapes. 5 cm 12 cm 15 cm
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Suppose that Dr. Bruno obtains a significant interaction but not a significant main effect of praise. Then, in interpreting his results, he would be justified in concluding that... Suppose that Dr. Bruno obtains a significant interaction but not a significant main effect of praise. Then, in interpreting his results, he would be justified in

explain in your own words how systems of equations were used to help out with the coffee shop question. How will the methods of this module be helpful to you in your future? Were there some areas where you would have appreciated more explanation

Consider A ABC, where a=8, c=11, and m/C = 33. What are the measures of the missing angles and missing side? Enter your answer by filling in the boxes. Enter all values rounded to the nearest tenth. mZA=| m/B=| [ b=
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If a study determines the difference in average salary for subpopulations of people with blue eyes and people with brown eyes is NOT signicant, then the populations of blue- eyed people and brown-eyed people are different salaries
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Can someone explain hoe to find this answer? The advertised weight for the YeeHaw Hardy Burger is 6 ounces. In fact, the YeeHaw Hardy Burger is a normally distributed random variable with a mean weight of 6.05 ounces and a standard deviation of .04 ounces. What is the probability that a randomly selected YeeHaw Hard Burger will be less than its
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The beam below is subjected to a concentrated load. Given that E of the beam 1s 114 GPa: 20 kN x=0 m Xx=5m x=10 m x=15 m H00 mm 400 mm (a) Determine the deflection of the beam at x=15 m. [12 points] (b) Determine the necessary discrete load to apply at x=15 m such that there is zero deflection at x=15 m. [13 points]
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A study yielded nonsignificant results. The nurse reading this study correctly interprets this as indicating: The study is not appropriate for inclusion in an evidence-based literature review. The null hypothesis may be correct. The null hypothesis should definitely be discarded. The effect size was too large. be a good interpreter of research

Central Angles & Arcs, Inscribed Angles assessment( don't worry about the -1 or my attempted work) Use the circle below 5. Find the length of (XIF Round to the nearest hundredth. for questions 5 and 6. xW U Yx ixW+ WV = 850 + 2+ 1180 - 85 - 85 XW = 23 0 X = 23 ' 85' 108' Z 6. Find the length of (ITU Round to the nearest hundredth. You 3600 W YVU =
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Was the method of obtaining subjects appropriate? Explain in 40 words

Billy is driving on an unfamiliar highway and sees a large rectangular object in the distance which he initially assumes to be a billboard advertisement, as he had already seen several of these along the route. Instead, it turns out to be the screen for a drive-in movie theater. This error was probably related to the use of _____. Question 22

Solve the system by elimination: 4x - 3y - 62 - 1 -y - 62 - 5 6x -y - -11 Express your answer as an ordered triple in the form (x, y, z). Provide your answer below
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A spherical snowball is melting in such a way that its radius is decreasing at rate of 0.2 cm/min. At what rate is the volume of the snowball decreasing when the radius is 12 cm. (Note the answer is a positive number). ___________cm^3/min Hint: The volume of a sphere of radius r isV=4/3^2 Just give me the answer! no step by step answer

1.The number of airports (in thousands) is given in the following chart. Year: 1988 1989 1990 1991 1992 Number of airports (in thousands): 7.4 7.6 7.7 7.8 7.9 a.Find the line of best fit model, N(t) , that represents the number of airports since 1988 . b.What is your prediction for 2012?

Identify the value of d. Give your answers in simplest radical form. 450 12
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Problem 3. Video Streaming and CDN (2pts) a) Video Streaming What protocol Youtube is using to stream videos to the client? Briefly highlight how can web browser select different qualities of youtube videos? b) CDN vs DNS List two similarities between CDNs and DNS in the way they scale data distribution
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P Pre Course Knowledge Assessm X O & https://mylab.pearson.com/Student/PlayerTest.aspx?testld=262543231 E BASV 314 SUM24 2nd Session daniel dewey 07/01/24 12:17 AM Test: Pre Course Knowledge Assessment Question 6 of 50 This test: 100 point(s) possible This question: 2 point(s) possible Submit test Suppose a survey was conducted in which
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For number 46 For number 60 1. Simplify each expression using the rules of exponents and give me an example of how to explain the steps you are taking. 2.Please give me an example of how to write each expression in the equivalent radical form and demonstrate how it can be simplified in that form, if possible. 3.Explain how which form works better

Say you were interested in studying civic engagement , in other words identify the factors that account for variation in civic engagement. a)What would your main independent variable be?What would be the main hypothesis you would like to test? b)What control variables would you use? c)What methodology would you use for your data analysis, and why?

The equation used to predict how many days it takes a 15-year old to read the first Harry Potter book is = 1.5 + 2.82x1 - 1.04x2 days, where x1 is the weekly hours of other activities and x2 is the reading grade level. Use this equation to predict how many days it will take to read this book for someone with 11.7 weekly hours of other activities

Read each item, and then answer the question about relationships in the space provided. Type either the transition or the pattern of organization. Then click "GO." Question 2. Climate change is real. Global temperatures have climbed nearly 2 degrees since the late 1800's. Moreover, glaciers are shrinking worldwide, and the pace of melting has

A two-sided coin is unfairly waited so that when it is tossed the probability that heads result is twice the probability that tails will result if the coin is to be tossed three separate times what is the probability that tails will result on exactly 2 of the tosses

Iff ( x ) = 3 x 2 7 x + 5 f(x)=3x2-7x+5 , findf ' ( 5 ) f(-5) . Use this to find the equation of the tangent line to the parabolay = 3 x 2 7 x + 5 y=3x2-7x+5 at the point( 5 , 115 ) (-5,115) . The equation of this tangent line can be written in the formy = m x + b y=mx+b wherem m is: and whereb b is: Q 2. Iff ( x ) = 6 + 3 x + 4 x 2 f(x)=6+3x+4x2

Ann is walking. D( t), given below, is her distance in kilometers from Glen City after t hours of walking. D (t) =10.4-4t Complete the following statements. Let D-1 be the inverse function of D . Take x to be an output of the function D .(a)Which statement best describes D-1(x)? Her distance from Glen City (in kilometers) after she has walked x

At alpha of 10%, a city planner wants to test the hypothesis that public transit users spend less time commuting to work than non-public transit users. She obtained the following sample data. Transit Users Non-Transit Users Mean (min) 20 30 Standard Deviation 5 10 Sample Size 26 26 The critical value is _________________ Question 34 options: a) +

Write a negation for the following statement. Everybody likes somebody periodically. Question content area bottom Part 1 Choose the correct answer below. A. Someone does not like somebody periodically. B. Someone likes somebody periodically. C. Nobody likes somebody periodically. D. Everyone does not like somebody periodically

20. Percy and Grover decide to go on a mountain hike together. Percy's girlfriend Annabeth is going to meet them at the bottom of the mountain in 8 hours. They can walk up the mountain at an average speed of 2 miles per hour, and down the mountain at an average speed of 3 miles per hour. How long should they hike uphill before turning around, if
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11. On the graph above, now sketch your inequality that represents the number of hours Alex can work at the internship. (1 point) 12. On the graph above, now sketch your inequality that represents the amount of money Alex needs to earn. (1 point)
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Design a spinner so that when you roll a standard die and spin the spinner, the probability of rolling a multiple of 3 and spinning a red is 1 out of 24

How much does 1 inch on the map equal in feet on the ground? (Note: the fractional scale listed at the bottom is 1:24,000 which means 1 inch on the map = 24,000 inches on the ground) (12 inches = 1 foot) Question 2Answer a. 1000 ft b. 2000 ft c. 10000 ft d. 20000 ft

You observe k i.i.d. copies of the discrete uniform random variable X i , which takes valuesthroughnwith equal probability. Define the random variableMas the maximum of these random variables, M=maxi( X i ) Forn=2, findVar(M)as a function of k .

SOLVE THE FOLLOWING QUESTIONS Matrices and Numerical Methods NIH 1. Let A = 2 -. Show that B = is the inverse of A. NIW -2 2. Find the inverse of the matrix A, if it exists. A = 1 6 3. Let A = HUP WAN 6 Find A- 1. - 2 O 4. For the matrix B = OH O perform the indicated operation. a) B2 b) B4 C) Bn 5. Compute determinants: a) C= 0 1 0] 1 b ) D = 2 3
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Suppose that X has a binomial distribution with n=201 and p=0.49. Show that the normal approximation to the binomial can appropriately be used to calculate probabilities about x. np = ? n(1-p) = ? Make continuity corrections for each of the following, and then use the normal approximation to the binomial to find each probability. P(x=82) P(x =100)

Problem 6 The general manager, marketing director, and 3 other employees of Company A are hosting a visit by the vice president and 2 other employees of Company B. The eight people line up in a random order to take a photo. Every way of lining up the people is equally likely. (a) What is the probability that the general manager is next to the vice

A town's population has been growinglinearly each year by the equation P=2000+50t where P is the population of the town, and t is the time in years.Interpret the slope of the equation.

Help " Are the following triangles congruent by AAS? If so, give the congruence statement for the ALUA Lesson 6. sides that are congruent. If not, explain why. ies riches 2 6 em 3 cm 6 cm B 3 cm C S
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help on a timer 2 1 point What, if any, lines are parallel? 1010 O m, n, and p are all parallel. n and p are parallel. m and n are parallel. No lines are parallel
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Chapter 12 - The Benefit Determination Process Chapter 12 The Benefit Determination Process Multiple Choice Questions 1. The total cost of employee benefits in the U. S. is dollars. A. two trillion B. one trillion C. five trillion D. one billion
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The manager of a seafood restaurant was asked to establish a pricing policy on lobster dinners. The manager intends to use the pricing $/LB to predict the lobster sales on each day. The pertinent historical data are collected as shown in the table. Anaswer the following questions. \f
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How do you calculate the expected frequency for this table? \f
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Evaluate the power function f(x) = x^5 when x = 3. 3 5 15 125 243

Problem 1 Tuna Pouch Fill Weights Time n=1 n=2 n=3 n=4 n=5 6 74.3 75.7 75.6 74 74.2 7 76 75.2 76.2 76.4 76.8 8 75.6 75.3 74.2 74.6 75.2 9 75.8 75.2 74.3 73.6 74.9 10 76.3 74.2 80.6 76.5 77.1 11 76.2 74.9 75.1 76.8 75.1 12 78.2 77.6 76.9 77.2 78.1 13 76.9 74.3 75.3 74.2 74.3 14 74.3 75.3 76.9 71.3 77.2 15 78.4 78.8 79.5 77.2 76.1 16 74.8 76.5 76.4

Identify the directrix, focus, and vertex of the parabola in the figure. 6 5 4 327 (2 -4) (2 -5) Match the correct coordinates or equation with the correct part of the parabola directrix -6 focus (2, -4) vertex (2, -5)Identify the directrix, focus, and vertex of the parabola in the figure. (+ 3/ 2) 6 -5 -4 3 -2 -14 Match the correct coordinates or
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A administrator is interested to study the pattern of disciplinary referrals, expulsions, and suspensions in high school schools by student's grade level. He divides the entire student population in the high schools into groups based on their grade level. He then selects 100 students through a random number generator from each group and checks

please help 1) find the m and b from the equation above. 16 of 17 00:59 / 01:15:00 13 of 17 00:49 / 01:15:00 m= Find the area of the shaded b= In the picture below, m
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I need help figuring this out please refer to the screenshot thank you in advance! \f
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Due Thursday by 11:59pm Points 11 Submitting an external tool Available after Aug 17 at 12am 52K-Fall 2021-Finite Math Ethan Bley Homework: Section ... Question 11, 10.1.23-SS HW Score: 54.55%, 6 of 11 points Save Part 1 of 9 O Points: 0 of 1 Education. In Country Q in 1960, 82.1% of school-age children were enrolled in public schools, 11.2% in
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Find the missing coordinates to complete the following ordered-pair solutions to the given linear equation. y plus 6 x equals 6 (a) left parenthesis negative 2 comma right parenthesis (b) left parenthesis 5 comma right parenthesis Question content area bottom Part 1 (a) The ordered-pair solution is left parenthesis negative 2 comma nothing right

A market researcher believes that brand perception of one of the company's products may vary between different groups. After interviewing 291persons, the following data was compiled. Can we conclude that brand perception is dependent on age?

Jacob owes $5,000 to a friend who is charging him simple interest of 3.50% p.a. He is required to settle the loan with two equal payments, one today and the other in six months. Calculate the size of the equal payments using six months as the focal date.

Part of the proof of a circle theorem is shown below. a) Fill in the gaps to complete the proof. b) Which circle theorem does this prove? angle AOC # 2x + Zy angle AOC # 2 x angle O
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Determina una ventaja y una desventaja del muestreo por conglomerado .

1. Let D be the closed triangle with vertices (0, 3), (3, 0), and (3, 0). Find the absolute maximum and minimum of the function f (x, y ) = x 2 + y 2 2y on D. 2. Let D be the rectangle [0, 4][0, 2]. Find the absolute maximum and minimum of the function f (x, y ) = 2x 2 + y 2 4x 2y on D. 3. Let D be the quarter circle in the first quadrant with

Multiple choice: What is the average of the following temperatures, 14.0 O C, 9.63 O C, 11 O C, and 9 O C ? a)10.9 O C b) 11 O C c) 10 O C d) 10.91 O C

The detector readings are as follows: 68, 70, 58, 60, 55, 57, 51, 59. We wonder if the median reading exceeds the true value 60. (a) Graph the data, and comment on skewness and outliers. (b) Test hypotheses about the median reading from home detectors:Ho: median =60, Ha: median >60, using alpha = 0.05.

Suppose f ( x ) = x 2- 81 and g ( x ) = x 2- 1. How many zeros does the graph of the function ( f g )( x ) have?

3|x+5|+4|x+5|=42 What is the negative solution to the given equation? Note: Limit your response to numbers (0-9), decimals (.), slashes (/), and an optional leading negative sign (-)

Express the confidence interval (0.077,0.139) in the form of pE

Find the standard deviation for the given probability distribution. x P(x) 0 0.37 1 0.13 2 0.06 3 0.15 4 0.29 Group of answer choices 1.81 2.52 1.70 2.90

XE. LIT 40. An opinion poll asks a random sample of adults whether they favor banning ownership of handguns by private citizens. A commentator believes that more than half of all adults favor such a ban. The null and alternative hypotheses you would use to test this claim are A. Ho: p = 0.5; Ha: p > 0.5 Ho: / = 0.5; Ha: / > 0.5 C. Ho: x = 0.5; Ha:

A real estate company is interested in testing whether the mean time that families in Gotham have been living in their current homes is less than families in Metropolis. Assume that the two population variances are equal. A random sample of 100 families from Gotham and a random sample of 150 families in Metropolis yield the following data on

Please help me answer Test I. Find the solution set of each linear equation or inequality. 1. 3x +7 5 - x = x- 3 12 6 3 2. 3 (x - 1)
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Hello, I hope you are well. I need help with the questions below. I would like step by step. I am not sure if I am doing right. 1. Differentiate the following. i. y = 5x6 - 2x/ + 6x - 10 ii. y = vx + 8 sinx iii. y = -9x-4 - 18x3 iv. y = = 5 + In x 2. Differentiate the following product rule. i. y = x cos x ii. y = (x + Inx) (x2 - 3x) iii. y =
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question 20 19. Sketch the graph of y = logs x. 20. The height of giraffes at birth in Africa over the last 5 years is approximately normally distributed around a mean of 6 feet with a standard deviation of 0.4 feet. What percentage of the giraffes were shorter than 5.4 feet? Use the Standard Normal Table. Advanced Mathematics, Second Edition
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Results Missing data Of the 310 total participants, 16 did not complete either the pre- or post-test, one completed the post-test during the training, and three did not complete any items in the Attitudinal section. Thus, only 290 participants were eligible for analyses. Of these participants, 31 did not disclose their profession, yielding 259

Show how to compute a von Neumann stability analysis of the alternate direction implicit numerical scheme for the 2D unsteady heat conduction equation (shown bellow) and show that the method is unconditionally stable. \f
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3. An investor is considering buying a bond named CCC. Bond CCC pays 11% semiarmual coupon, it has 15 years to maturity and the current price of this bond is $1,144.88. This bond is callable at the end of year 4 (the first and only call date). The call price of the bond is $1,122.90. 1'What is the RTC for this bond? Suppose our investor's
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See picture and answer it 1. For each of the following models: . Yt = 0.8Yt-1 + Et . Yt = -0.8Yt-1 + et . Yt = 0.3Yt-1 + 0.4Y+-2 + Et . Yt = 0.7Yt-1 + 0.49Yt-2 + et . Yt = Et + 0.8Et-1 . Yt = Et - 0.3Et-1 + 0.4Et-2 . Yt = Et . (1 - 1.1B + 0.1B2)Yt = (1 -1.7B + 0.72B2) Et . Yt = 0.6Yt-1 + et + 0.4ct-1 (a) Verify whether it is stationary and/ or
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You buy a big bag of 50 gumballs. There are five different colours of gumball in the bag and you are curious if each of the colours were equally likely to be put in the bag or whether some colours were more likely than others. a. If all five colours were equally likely to be put in the bag, what would be the expected number of gumballs of each

Find the simplified exact value for: (6 marks) (csc135)(sin240) + cot-330 5. Find "t" (0St
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In Tableau, fields are either Continuous or Discrete. In most cases, Dimensions are Discrete and Measures are Continuous. However, we can change these designations sometimes. Select the appropriate way(s)? Group of answer choices Date fields can be changed to continuous All Measures can be changed to discrete A dimension field that is aggregated

Math

1. For this assignment, explicitly state the 5 steps of a simulation and carry out the simulation. For the first problem, use your calculator. For the second problem, use the random digit table. A basketball player makes 80% of her free throws. Recently during a very close game, she shot 5 free throws near the end of the game and missed 3 of them.
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1 Bill takes out a conventional loan to purchase a car. The interest rate is 5.2% compounded monthly. and Bill has IO yearn to repay the 5515.000 he borrowed. What are Bill's monthly payments? Enter your answer to the nearest cent. 3; 654 . 055 Incorrect A credit card statement shows a monthly interest rate of 1.39%. What is the EAR? Enter your
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Answer number 24 Your last submission is used 24. [0/0.37 Points] DETAILS PREVIOUS ANSWERS LARCOLALG11 2.3.030. Consider the following function. f(x) = V 4x- 11 -7 (a) Use a graphing utility to graph the function and find the zeros of the function. (Enter your answers as a comma-separated list.) X 2.43 X (b) Verify your results from part (a)
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a female sea turtle buries 200 eggs in the sand. after the baby turtles hatch they hurry to make it to the relative safety of the ocean. of the 176 babies that hatched, 124 were eaten by birds, 37 were eaten by other predators, and 3 ran the wrong direction. suppose that just after the eggs were laid that you marked one with an X. what is the

0 Question 1 E 0/2 pts '0 3 8 99 G) Details A combination lock uses 3 numbers, each of which can be 0 to 36. If there are no restrictions on the numbers, how many possible combinations are available
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step by step help please Question 2 Los Angeles workers have an average commute of 32 minutes. Suppose the LA commute time is normally distributed with a standard deviation of 14 minutes. Let X represent the commute time for a randomly selected LA worker. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X ~
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We can use the tapply() to calculate the means, standard deviations, and standard errors for each group. The code is started for you below, and you should fill in each comment (#) with the code to get the means for the money dependent variable when where_bought and who_bought variable

A forest area of 90,000 square feet contains 600 trees. What is the correct representation of the density of trees in this area

Determine whether the sample described below is a simple random sample. A quality control engineer selects every 15 comma 000 th every15,000th muffin muffin that is is produced. Does this sampling plan result in a simple randomsample? A. The sample is not a simple random sample because each individual muffin muffin does not have the same chance of

Write the function h(x) as a composition of two non-identity functions f(x) and g(x), so that h(x) = f g(x). (

A researcher would like to estimate the population proportion of adults living in a certain town who have at least a high school education. No information is available about its value. How large a sample size is needed to estimate it to within 0.09 with 95 % confidence? n=?

The population of a certain town is growing at a constant rate. Suppose the population is 1900 initially, and after 4 years, the population is 2212. Which of these expresses the rate at which the population is increasing? Select the correct answer below: 312 people per year 78 people per month 1900 people per year 78 people per year 78 people per

A club currently has 360 members who pay $ 400 per month for membership dues. Theclub's board members want to increase monthly revenue by lowering the monthly dues in hopes of attracting new members. A market research study has shown that for each $ 1 decrease in the monthly membershipprice, an additional 3 people will join the club. What price

What type of sample is described below? A manufacturer of sports equipment is considering marketing a mahogany croquet set for adult players. It surveys 300 random sports enthusiasts and finds 15 croquet players. It asks the 15 for names of other players. Snowball, Cluster, simple random, judgemental

Problem 2. Apply Laplace Transform, with respect to time t, to the following PDEs and the associated boundary conditions. Variable p denotes pressure and variables x, y, z denote space. (5+2+3=10 points total) ap(x,t) ap (x,t ) ax- p(x,1) _= 3500 p(x,t) =3500 ap (x,t) =-350 ax d'p(x,y,t) d'p(x,y,t) ap(x, y,t ) at (p(x, y,1) _= 3500 Z d'p(x,y,z,t)
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i . At the 0.05 level of significance , determine whether each independent variable makes a significant contribution to the regression model , Indicate the most appropriate regression model for this set off
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