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Mathematics Questions and Answers March 10, 2021

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As part of an annual fundraiser to help raise money for cancer research, Linda joined a walkathon. The track she walked on was 3520 long. Linda walked 2.5 laps. Her sponsors agreed to donate an amount of money for each mile she walked. How many miles did she walk

An e-business manager wants to test the claim that the mean exposure to a certain type of internet ads exceeds 1000 viewers per day. Randomly selecting 20 days she calculated the sample mean and standard deviation. As far as the population standard deviation is not available, but the population is approximately normally distributed she has to use

2 asks for the second derivative of (x^5 - 5x^2 + x) / (x^3)

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help please!! Can someone show me how to solve this problem using TI 84? \f
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CLD Learners perceive mathematicians as "remote, sloppy, obsessive, and calculating". What can a mathematics teacher do to begin to erase this negative view of the discipline of mathematics? Use real-life situations that show the utility value of mathematics Provide students with opportunities to come to the board and work problems Provide them

Suppose random variable X has the moment generating function. Determine the mean of X. Show your work for full credit. \f
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In the diagram, AC is a diameter of circle O. If the slope of BO is - , what is the slope of B? B A O A + O B. - OC. 2 O D. - 2 O E. -4
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An instructor hypothesized that the standard deviation of the final exam grades in her statistics class is larger for the male student than it is for female students. Males are 16 with a standard deviation of 4.2 and females are 18 with standard deviation of 2.3. a) is there enough evidence to support her claim, using the 10% level of

Find the Borda score for the Mustangs in a competition between Mustangs, Avengers, Falcons and Ravens. The voting results by preference are shown: MAFR: 2 AMFR: 2 FAMR: 2 RAFM: 3

The flip of a biased coin comes up with head 65% of the time. The coin is repeatedly flipped independently. (a) Let X denote the number of ips needed for the rst head. Find the probability P(X 4). (b) Find the probability of the event that the first time that two consecutive heads follow two consecutive tails occurs after the 8th flip.

A. Your manager wants you to evaluate the difference in cycle time between three different offices. Describe the steps you would take in the evaluation to provide a report. B. Describe the difference between Between-Treatments (Groups) and Within-Treatments (Groups) variation. Explain how you would evaluate the variation and other methods to

Provide three examples of constructive, positive reinforcement.

A new popular midsize car has a retail price of $30,000. The midsize car's value M(t) is given by the exponential model M of t is equal to 30,000 times the quantity four fifths to the power of t where t represents the time in years. Identify the domain, in yearly intervals, that contains all the years the car's value is less than $1,000. [13, )

Given a population mean of 53.7 with a standard deviation of 1.3 and a sample size of 6, answer these questions: Part A: What is the standard deviation of the sampling distribution of x? Show your work. (5 points) Part B: What does the sample size need to be if you want the standard deviation of the sampling distribution of x to be 0.325? Show

A lady buys a dozens eggs, of which two turns out to be bad she chose four eggs to scramble for braekfast find the chances that she chooses a all good eggs b three good and one bad egg c two good and two bad eggs at least one bad egg

Find the inverse Laplace transform of F(s) . B F S $ 2 + 16
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By inspecting a graph of yequalssine x, determine whether the function yequalssine x is increasing or decreasing on the interval left parenthesis negative StartFraction 3 pi Over 2 EndFraction comma negative pi right parenthesis

7. Question 7 Repetition-Break Stories are: 1 point Similar event + Different Event + Different Event Similar event + Similar Event + Similar Event Different event + Different Event + Different Event Similar event + Similar Event + Different Event

Find the product of - 3 - 4 and its conjugate. The answer is a + bi where The real number a equals ? The real number b equals?

When a circular plate of metal is heated in an oven, its radius increases at a rate of 0.02 cm/min. At what rate is the plate's area increasing when the radius is 56 cm? . . . The rate of change of the area is |cm2 / min. (Type an exact answer in terms of n.)
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In a study of vehicle ownership, it has been found that 31% of U.S. households do not own a vehicle, with 50% owning 1 vehicle, and the remaining owning 2 or more vehicles. The data for a random sample of 199 households in a resort community are as follows: 51 owned 0 vehicles, 109 owned 1 vehicle, and the remaining owned 2 or more vehicles. What

Breast Cancer Breast Cancer Total Present Absent Mammogram positive 31 1 (a) 6976 (b) 7287 (gig) Mammogram negative 38 (c) 92675 ((1) 92713 (9354) 339 (a)+(c) 99651 (b)+(d) 100,000 (a+b+c+d)
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Find a rational number halfway in between the two numbers. nine tenths and three fourths

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LR = Use the information provided to write the vertex form equation of each parabola. 7) Vertex: (-10, 10), Focus: -10, 79 159 8 8) Vertex: (8, -10), Focus: 8, 16 41 85 9) Vertex: (-10, -3), Focus: -3 10) Vertex: (7, -7), Focus: -7 4 12
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What is the simple interest earned on a principal amount of $5,000 invested at an annual interest rate of 8% for 3 years? What is the simple interest earned on a principal amount of $5,000 invested at an annual interest rate of 8% for 3 years? $1,400 $1,600 $1,200 $1,000

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Find the particular solution to the given differential equation that satisfies the given conditions. X + y dy = 5(xdx + ydy); x= 1 wheny=0 III The particular solution is (Type an equation.)
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Use theTornadoesData and your statistical expertise to answer the questions: Is it reasonable to claim that there are more tornadoes in April than in August?

Use Finite differences along with algebra to find a polynomial function with the data set given: (-5,4), (-4,1), (-3,-1), (-2,1), (-1,4), (-6,7), (0,7) State the polynomial function when found.

Fundamental Counting Principle Calculate the number of possible outcomes for a given situation using the fundamental counting principle. A game involves a spinner that is evenly separated into four sections. To play the game, a player spins the spinner three times. What is the number of individual outcomes when spinning the wheel three times? a.)

Suppose that40%of all adults regularly consume coffee,50%regularly consume carbonated soda, and30%regularly consumes both coffee and soda. (a) What is the chance a randomly selected adult regularly drinks coffee but doesn't drink soda? (b) What is the probability that a randomly selected adult consumes coffee, soda or both? (c) What is the

What is Expected Value in statistics? How do you find it?

Find the rational number halfway between the two numbers in the pair below. two thirds and one sixth Question content area bottom Part 1 The rational number halfway between two thirds and one sixth is enter your response here

La siguiente definicin: "Es el conjunto de conceptos bsicos que de defini para ser utilizado como referencia para el desarrollo de las normas especficas y para optar el anlisis y solucin de nuevas realidades o hechos econmicos que pueden presentar en la formulacin de los estados financieros", Corresponde a qu macro conceptual

One meter is about 3.3 ft. Use this information to determine a) the equivalent of one square meter in square feet. b) the equivalent of one cubie meter in cubic feet. a) The equivalent of one square meter in square feet is 10.89' ft. (Type an integer or a decimal.) b) The equivalent of one cubic meter in cubic feet is ]ft . (Type an integer or a

3. What additions or subtractions would you like to see in the ENMA 480 course

A machine requires 20 instances of some part to function. When any one of those 20 parts breaks, the machine stops working. Since they are all identical and are subject to equal strains, each of them breaks independently after a time which is exponentially distributed with Expo(1/2000) . Calculate the pdf f(t) of the machine stopping to work for

Use inverse functions where needed to find all solutions of the equation in the interval [0, 2). (Enter your answers as a comma-separated list.) 2 sin 2 x +5cos x =4

Exam Lesson Name: Basic Math Skills Exam number: 700140RR Exam Guidelines Exam Instructions Question 16 of 20 : Select the best answer for the question. 16. What is step 2 in the problem-solving process? O A. Write down the facts and figures. O B. Read the problem. O C. Do the work. O D. Find a relationship between what is given and what must be

I am seeking information on this subject Theory of Child Mariage : Case of Niger how can I design a data collection plan for a quantitative study for this subject? should I use a survey OR an experimental design.

An average glass of milk contains 115 grams of calcium with a standard deviation of 8 grams. Using Chebyshev's theorem, construct an interval that contains the calcium content of at least 50% of the glasses of milk. Retain 2 decimal places of accuracy in all calculations.

need help A procedure used for finding the equation of a straight line that provides the best approximation for the relationship between the independent and dependent variables is the Select one: a. Most Squares Method O b. Correlation Analysis O c. Least Squares Method O d. All of the above O e. Mean Squares Method
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If tan A = 2/3 where A lies in the first quadrant, then which of the following options is true? Tan 2A = 12/5, Tan 2A = 5/12, Tan 2A = 12/13 or tan 2A = 13/12

AREAS OF CONCERN AS WITNESSED IN THE CLASSROOM Lesson plans are not completed each week OBJECTIVES: WHAT WILL BE DONE TO CORRECT THE AREAS OF CONCERN AND WORK TOWARD MEETING THE GOALS WHO WILL BE INVOLVED AND WHAT ROLE WILL THEY PLAY CONSEQUENCES IF OBJECTIVES AND/OR GOALS ARE NOT MET

Find the distance d (P, , P2 ) between the given points P, and P2. P1 = (-1,3) P2 P 2 = (5,4) X 6 d (P 1, P2) = (Simplify your answer. Type an exact answer, using radicals as needed.)
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Use the standard normal distribution to find the following probabilities/areas. (a) P(z < 1.48) (b) P (z > 2.15) (c) P (1.27 < z < 0.63) (d) Find the area to the left of z = 0.54

Percentiles Calculate the percentile of a specific value from a data set. Jessica graded seven standardized tests with scores of: 50, 47, 84, 78, 49, 97, and 75. Which standardized test score represents the 50th percentile? a.)50 b.)75 c.)47 d.)78

Josue flippedhis luckycoin 12 times and got7 heads. Josue used these numbers to estimate the probablity of getting a head with his lucky coin. Find the margin of error for Josue's estimated probability above. What's the interval forthe chance of flipping a head with Josue's luckycoin.

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Sets C and D are subsets of the universal set U. These sets are defined as follows. U= ( 1, 2, 3, 5, 6, 7 C= ( 2, 5} D= ( 2, 7 } Find the following sets. Write your answer in roster form or as O (a) CUD- O (b) c'nDi- X
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What is the range of the function f(x) = 3x + 2 over the interval -6
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Q2 b. The board of directors of gothic products is considering acquiring, one of two companies and is closely examining the management of each company in regard to their inclinations towards risk. During the past five years, the first company's returns on investment had an average of 28.0 percent and a standard deviation of 5.3 percent. The second

Selecciona la forma nosotros del verbo poder en el pretrito. Multiple choice question. podemos pudieron pudimos

How many hours of Community Engagement are required each semester for both fall and spring? Group of answer choices 10 hours Fall semester/10 hours Spring semester 5 hours Fall semester/5 hours Spring semester 2 hours Fall semester/2 hours Spring semester There is requirement

A coin is tossed 16 times.In how many outcomes do exactly 6 tails occur? a) 6 b) 8,008 c) 720 d) 5,765,760 e) 96 f) none of the above

Provide an appropriate response. The scores from a state standardized test have a bell-shaped distribution with a mean of 100 and a standard deviation of 15. Use the Empirical Rule to find the percentage of students with scores between 70 and 130.

Subtract the polynomials (12x^4-11x^3-4x)-(3x^3-3x^2+11x)

If we assume the participants in the survey of 100 students are a "typical" sample of students. What is the probability of selecting a student with an intellegence rating of 67 Make sure to show your calculations for full credit
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Need some help with the following. I attached the work that I did but I am not sure about it. \f
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Use common logarithms or natural logarithms and a calculator to evaluate the expression. log Subscript 13 Baseline 15 Question content area bottom Part 1 Use the change of base property to rewrite the given expression. log Subscript 13 Baseline 15equals enter your response here (Do not evaluate.)

HELP ME SLOVE THIS QUESTION PLEASE Find the x-value at which fis discontinuous and determine whether fis continuous from the right, or from the left, or neither. 6+x2 if x 5 0 f ( x ) = 8 - X if 0 8 X = O continuous from the right O continuous from the left O neither
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Las ecuaciones de oferta y demanda para cierto producto son: (1) y (2) respectivamente, donde p representa el precio por unidad en dolares y q, el numero de unidades vendidas por periodo. (1) 3q-200 p+ 1800=0 (2) 3q+100 p-1800=0
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A population has a mean =10 and standard deviation =3 Find the z-score for a population value of 17 Enter answer to 2 decimal places

f your college hires the next four employees without regard to gender, and the pool of applicants is large with an equal number of men and women, then the probability distribution for the number x of women hired is described in the accompanying table.

Find the critical value, tc , for c = 0.95 and n = 16. State the value of d.f. used. A) 2.602 B) 2.131 C) 2.120 D) 2.947 1) d.f. = ___________

Write on the concept, research finding, theory, or idea limit and derivative that is studied in calculus. Why do you believe this concept, research finding, theory, or idea (Limit and derivative) is important? Are you able to apply something you've learned from this topic (Limit and derivative) in some aspect of your life or studies? What

Find the simple interest. (The rate is an annual rate unless otherwise noted. Assume 360 days in a year.) p = $1225, r = 8.5%, t = 10 days

(05.02 LC) Find the tangent ratio of angle O. Clue: Use the slash symbol ( / ) to represent the fraction bar, and enter the fraction with no spaces B 17 15 A 8 C Answer for Blank 1
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The stresses at a certain point in the ground are x = -210 kPa, z = -375 kPa, and xz = -75 kPa. a) Draw the Mohr's circle for this state of stress. b) Determine the mean normal and deviator stresses c) Determine the principal stresses and their orientation d) The state of stress at 55 counterclockwise

Slove the problem. . If m/4 = 350, find m41, m42, and m23. A B 2 3 4 C D
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For the following data set, approximate the sample standard deviation. Height in (inches) Frequency 50-52 5 53-55 8 56-58 12 59-61 13 62-64 11

The volume V f a cylinder is computed using the values 5.8 for the diameter and 7.5m for the height. Use the linear approximation to estimate the maximum error in V if each of these values has a possible error of at most 3%. whats the percent error in v

Which statement about tornadoes is true? Group of answer choices Tornadoes form only in thunderstorms. Tornadoes form only in supercell thunderstorms. All supercells produce tornadoes. (Each of the above statements is false.)

a) make standard Normal distribution plot (Normal curve, a Bell shaped curve). In Excel, list a column for z-value for the range of (-3.5, 3.5) with Increment of 0.5, calculate in another column for Norm .S. Distribution (z-value, False), then plot 'Scatter with Smooth Lines' plot on both columns. b) Find the z value (to two decimal places) that

A shipment of 11 computers contains 4 with defects. Find the probability that a sample of size 4, drawn from the 11, will not contain a defective computer. The probability is? .

In a study of 776 randomly selected medical malpracticelawsuits, it was found that 491 of them were dropped or dismissed. Use a 0.05 significance level to test the claim that most medical malpractice lawsuits are dropped or dismissed.

Researchers study the relationship between interpersonal violence and health in college age women. The researchers report an OR for somatic symptoms among abused versus non abused women (OR 1.03 95% CI 0.79-1.71). Based on this information, you know: Abused women are significantly more likely to have somatic symptoms. There is no significant

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show all the steps that you use to solve this problem, please. If a/4 = b/7, what is the value of a/b ?

The data show the number of hours of television watched per day by a sample of 28 people. 4 4 6 0 0 7 3 5 1 4 0 3 9 1 7 1 2 7 4 1 3 2 1 4 7 4 0 6

A depositor may endorse checks with a rubber stamp. (1pts) Question 3 - A depositor may endorse checks with a rubber stamp. True False

Please help me solve Score: 0 of 1 pt 18 of 25 ( 10.3.65 For the following telescoping series, find a formula for the nth term of the sequence of partial sums IS, Then evalua [1 k=1 ( VK VK + 2 S = (Type an exact answer, using radicals as needed.) Enter your answer in the answer box and then click Check Answer part remaining Type here to search O W
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fill in table Transformed Function: f ( x ) = -21 = (x + 3) + 2 Parent Functions: g (x ) = Vx h(x ) = x2 Parent Function Transformed Function Parent Function Transformed Function (x, y) ( (x, y ) 1) Create a table of values showing at least four image points for the parent and transformed functions: Er Jul 10 6:14
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How do you a nalyze cases of Type I and Type II errors?

250 mg = ____ g Grupo de opciones de respuesta 0.025 g 25 g 0.250 g 2.50 g

There are three items in the shopping list that are based on the number of guests, but the quantity ordered should be rounded up to the nearest whole number. Add the appropriate rounding function to the formulas in cells D10, D11, and D23

Convert 4 6/13 to a decimal rounded to the nearest hundredth

Significance of Slope coefficients using: -Critical -p-value and -confidence interval approach

In a study, 37% of adults questioned reported that their health was excellent. A researcher wishes to study the health of people living close to nuclear plant. Among 12 adults randomly selected from this area, only 3 reported that their health was excellent. Find the probability that when 12 adults are randomly selected, 3 or fewer are in

Graphs of Rational Functions Using the reciprocal function, f(x) = -, determine the rational function for each graph shown. Each solution should be of the form f(x) =... Graph Function o ti do -8-7 -6 5 4 -32 -3 - 2- Question Help: [Video
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Can you help me with this problem, What are the the steps to solve it? F(x)= 1/2x+14 if x/= 6 You need to show that the function is continuous and then you need to show that the limits are the same. Please show the algebra that you used to solve
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6. If X and Y have joint pmf Px,Y (X, y) = 20! cy!(20 - x - U)1 (1)"(.3)3(.6)20-2-3, 0
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Karl Popper was a philosopher of science who said that science requires hypotheses to be falsifiable. What does that mean?What are the implications in a post-fact world (i.e., when people's "opinions" are considered to be just as valid as scientific (i.e., hypothesis test) findings?

P 6. Given: LRPQ= /RTS, R is the midpoint of OS Prove: APOR = ATSR Statements Reasons 1. 1. 2. 2. 3. 3. 4. 4. 5. 5
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Suppose that A and B are two events such that P(A) 0.4, P(AB) = 0.8, and P(AB) = 0.2. Let C denote the event that exactly one of A and B occurs. What is P(C)?

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