S
  1. study help
  2. subject categories
  3. sciences
  4. mathematics
  5. march 2021
  6. 20

Mathematics Questions and Answers March 20, 2021

Expert-verified solutions to help you succeed

Supposewe want to estimate the average rent of a one-bedroom apartment rentals to within 20 of the true mean.Assuming a 95% level of confidence and assuming = 220, how large a sample is required for the given margin of error?

In an attempt to study the students' opinions regarding a recently published article, two samples of students were selected. The first sample was selected from 1st University students and another was selected from 2nd University students. The results were as follows: University/Opinion Agree Neutral Disagree Totally Disagree 1st University 12 13

Police are to conduct random breath testing on drivers on a busy road on Friday evening. Suppose 3% of the drivers drink and drive at the time. Let X be the number of drivers that police need to test to get the first case of drinking and driving. Let Y be the number of drivers tested to get 3 such cases. (g) What is the probability that the police

What can you say about an extremum point that does not satisfy the necessary condition? i.e., can it be a minimum or maximum? simple way explain

The plant-breeding department at a major university developed a new hybrid boysenberry plant called Stumptown Berry. Based on research data, the claim is made that from the time shoots are planted 90 days on average are required to obtain the first berry. A corporation that is interested in marketing the product tests 60 shoots by planting them

NAME Retrieval 1. Quadrilateral WASP = Quadrilateral BLUE a. Mark the corresponding sides and angles on the figures. B W A U P S b. List the eight congruence statements about line segments and angles
image text in transcribed

content area top Part 1 Decide whether subset equals, is a proper subset of, both, or neither can be placed in the blank to make a true statement. {10, 11, 12} _______ {9, 10, 11, 12} Question content area bottom Part 1 A.subset equals subset equals B.is a proper subset of is a proper subset of C. Both is a proper subset of and subset equals D.

This is the last question I have, really need help on this one. \f
image text in transcribed

1. Use tan u = u - 3 + -US - -U+ -U" u 11 +. ... 11 To approximate 0.1 tan-'(x2 )dx with an error of no more than 0.0000001 O
image text in transcribed

12. The graph of the function f(r) = (bx)" + k, n E N is vertically stretched about the @-axis by a factor of 2, reflected in the -axis, horizontally stretched about the y-axis by a factor of 3, translated right 5 units, then down 1 unit. Three points on this new graph g(x) are (5, -21) , (14, -75) , (11, -37). Determine the equation of y = f()
image text in transcribed

A bacterial population has an exponential growth rate of11.2% per hour. If there were 480 bacteria initially, what would the bacterial population be after 5 hours
image text in transcribed

How do I find the probability? Suppose x has a uniform distribution on the interval from 2 to 2. Find the probability. P(x
image text in transcribed

Solve 16. \f
image text in transcribed

Perform the indicated operations. Write the answer in standard form, a + bi. (5 + 37) (5-37)=

solve number 17 In Problems 15-22 determine whether the given functions are linearly inde- pendent or dependent on (-co, co). 15. fi(x) = x, f2(x) = x2, f3(x) = 4x - 3x2 16. f (x) = 0, f2(x) = x, f3(x) = ex 17. fi(x) = 5, f2(x) = cos x, f3(x) = sin2x 18. fi(x) = cos 2x, f2(x) = 1, f3(x) = cos2x 19. f (x) = x, f2(x) = x - 1, f;(x) = x+ 3 20. fi(x)
image text in transcribed

Question 1 10 pts Upload your work here as one pdf file or upload all your work for all problems as one pdf file for question #7. Use the Remainder Theorem to find the remainder: (22 z* +42% 3z 5) + (z 2). Upload | choose a File
image text in transcribed

Let Z be a standard normal random variable. Calculate the following probabilities using the calculator provided. Round your responses to at least three decimal places. a. P (Z >2.08)= b. P ( Z 1.24)= c. P( 0.75 < Z < 2.11)= show the work please.

Which one of the following is the measurement of insulation's resistance to the transfer of heat? a. R-value b. I-factor c. Heat-area ratio d. Insulation quotie

6 (5 points) Title:AlgwFin-U6-Test-Std15-15 Identify the decay factor in the following exponential function: y = 3.5(0.89) x a 3.5 b 0.89 c x d 11%

If you draw a black card from a shuffled deck of cards what is the probability that it is either a club or a spade? Group of answer choices

of goods. Math is also used in measuring time, distance, and speed, which is essential for transportation, communication, and navigation.Read the problem carefully: Before you start solving the problem, make sure you understand what it's asking. Read the problem carefully and make a note of any key words or phrases. DO ENTIRE QUESTIONs Read the
image text in transcribedimage text in transcribedimage text in transcribed

Define P-values. Explain the two methods of interpreting P-values.

A random sample of 121 observations produced a sample proportion of 0.35. An approximate 95% confidence interval for the population proportion p is between a) 0.265 and 0.421 b) 0.307 and 0.393 c) 0.265 and 0.435 d) 0.245 and 0.455 e) 0.279 and 0.421 f) None of the above.

Add. 8 t squared8t2 + 8 + 5 t squared5t2 minus 3

Directions: In each of the following sentences, determine whether it is true or false that the subjects are correctly underlined. Jordan told me to turn left at the strip mall and then to take a right by the self-storage center. True False Clear selection

4 (5 points) Title:AlgwFin-U8-Test-Std16-18 Which of the following is the best buy? a 4 lb. for $27.60 b 6 lb. for $41.28 c 7.5 lb. for $51.63 d 8 lb. for $55.12

Based on the Nielsen ratings, the local CBS affiliate claims its 11 p.m. newscast reaches 41% of the viewing audience in the area. In a survey of 100 viewers, 36% indicated that they watch the late evening news on this local CBS station. What is the critical value if = 0.01?

a. If a number is divisible by 98, is it divisible by 14

Consider the following system of equations. {4x+4y+20=016x=4y Step 1 of 2 : Determine if the point (1,4) lies on both of the lines in the system of equations by substituting the ordered pair into both equations

Suppose n people are in an ice-cream shop which sells f different flavors of ice-cream. Each person likes at least f/4 of the flavors. Prove that there must exist an ice-cream flavor that is liked by at least n/4 people.

Commutative Property Commutative Property drop zone empty. Associative Property Associative Property drop zone empty. Identity Property Identity Property drop zone empty. Distributive Property Distributive Property drop zone empty. (a + b) + c = a + (b + c) and (a b) c = a (b c) 0 + b = b and 1 b = b a + b = b + a and a b = b a a (b + c) = a b + a

Write the estimated equation for this analysis with the y-intercept, regression slope and the variables . I am having a hard time understanding this concept. I don't know if you have an example that you could walk me through? Or a table that shows exactly where you are getting these data points in order to complete the equation.

. Gas Prices: Arizona. During a certain week the mean price of gasoline in Arizona was $3.629 per gallon. A random sample of 43 gas stations is drawn from this population. What is the probability that the mean price for the sample was between $3.610 and $3.625 that week? Assume = $0.052.

Practical Significance of a null hypothesis rejection is important because: A. Any Null Hypothesis should be factored into all related decisions B. Not all Null Hypothesis rejections will impact real world outcomes in a meaningful way C. Large enough sample size can cause most all null hypothesis claims to be rejected D. Both B and C E. Both A and

18.) If the outcome of event A is not affected by event B, then events A and B are said to be: a) Collectively Exhaustive b) Mutually Exclusive c) Independent d) None of the above
image text in transcribed

The 75 %o confidence interval for the mean SAT-1 Math score is 642.5+47 = (595.5, 689.5) = (596, 690) I am 95% confident that the interval 596 to 690 contains the true mean SAT-I Math score of the students. The statewide mean Math score of 503 is not within this confidence interval. This high school has a
image text in transcribed

0. If the power series Can (x - 4)" converges at x = 7 and diverges al x = 9, which of the following must be true? 1. The series converges at x = 1. II. The series converges at x = 2. III. The series diverges at x = -1, (A) I only (B) II only (C) I and II only (D) II and III only
image text in transcribed

what is spectral norm, and how does it differ from the norms defined

Six people of different ages are getting in line to buy coffees. Compute the number of ways they can arrange themselves in line such that no three consecutive people are in increasing order of age, from front to back.

What value will be assigned to the x variable? z = 10 y = 0 x = y < z and z > y or y > z and z < y

Identify the sampling method as simple randomsampling, systematicsampling, conveniencesampling, or stratified sampling. A computer randomly selects 900 names from a list of all registered voters. Those selected are surveyed to predict who will win the election for Mayor. Choose the correct sampling technique below. A. Simple random sampling B.

Suzan sees a bag of marbles, she grabs a handful at random. She has seen a bag containingthreered marbles,fivegreen ones,twowhite ones, andthreepurple ones. She grabseightof them. Find the probability of the following event, expressing it as a fraction in lowest terms. what is the probability that all 8 she grabs are red ones.

The following table presents the probability distribution of the number of vacations X taken last year for a randomly chosen family. Compute the standard deviation ?x . \f
image text in transcribed

Please explain how to do the attached problem and the correct answer. equilibrium price. Supply and demand curves for a product are shown in the following figure. Estimate the producer surplus at the 100 P ( $) 80 S 60 40 20 D 20 40 60 80 100 3000 2800 50 1200 1500
image text in transcribed

Question 2 (30 points) (13 Consider the differential equation Q 2 SW Where S q} is a constant source term. dx\" Part 1 Derive a first-order accurate nite difference equation for a generic interior node assuming equal grid spacing. Use nodes \"0\
image text in transcribed

3. Let vector-F(x,y,z) = ye^x vector-i + (e^x +2yz) vector-j + y^2 vector-kbe a vector field. a) Find a function f: R^3 -> R such that f = vector-F b) Let C be a curve connecting (0, 1, 0) to (0, 2, 3). Evaluate C dvector-s.

Loan Application A promissory note contains the _______________ and _______________ of your loan. If you have a low credit score or don't meet the desired income amount, the lender may require a _______________. A promissory note includes these key pieces of information

Identify whether the variable in the information below is qualitative or quantitative. Yousurvey your friends in the statistics class asking them how they did on their first exam.

Suppose a simple random sample of size n=200 is obtained from a population whose size is N=15,000 and whose population proportion with a specified characteristic is p=0.2 Complete parts (a) through (c) below . B. What is the probability of obtaining x=42 or more individuals with thecharacteristic? Thatis, what is P(ModifyingAbove p with caret p

3.1. Determinar la corriente necesaria para alimentar el circuito, de tal manera que se genere una densidad de flujo de B=0.5 T en la rama central del ncleo ferromagntico de la Fig.1. Considerar: Espesor ncleo 10 mm. N vueltas bobina: 50 Material de ncleo: Pure iron annealed Seccin de bobina: Cu 16 AWG

Diagnostic tests of medical conditions can have several types of results. The test result can be positive or negative, whether or not a patient has the condition. A positive test (+) indicates that the patient has the condition. A negative test () indicates that the patient does not have the condition. Remember, a positive test does not prove the

A box contains pink, white and black marbles. A marble is drawn randomly from the box. The probability that the marble is drawn white is 8/15 and that it is black is 1/5. If there are 8 pink marbles in the box calculate the total number of marbles.

\f
image text in transcribed

content area top Part 1 Use SequalsStartFraction n left parenthesis n plus 1 right parenthesis Over 2 EndFraction to find the sum of 1plus2plus3plus. . .plus 525

Direction: Differentiate the function by applying the differentiation rules. 1. f (x) =7x -5 6. v(r) = =mr3 2. g(x) =1- 2x - x2 7. F(x) = x2+3x+ 3. f (x) = x3 - 3x2 + 5x - 2 8. g(x) = 4x4 - 1 4. f(x) = =x8 - x4 9. g(x) = = + 5 5. F(t) = =t4 NIH t2 10. f (s) = V3(s3 - s2)
image text in transcribed

Time in solitary Range and average Purposes for solitary Which groups are overrepresented in solitary Describe outcomes of solitary Misconduct Mental health Common effects Antisocial behaviors/recidivism
image text in transcribed

(d) For every = > 0, there exists > > 0 such that bro and f(x) = 2, Let a = 1 and L = 1. Check if they are satisfies (1) and (d)
image text in transcribed

8.4 In a4-week study about the effectiveness of using magnetic insoles to treat plantar heelpain, 51 subjects wore magnetic insoles and 43 subjects wore nonmagnetic insoles. The results are shown at the right. At =0.06, can you support the claim that there is a difference in the proportion of subjects who feel better between the twogroups? Assume

Problem: Suppose you have a recurrent chain in continuous time with transition rate Q(0,j)from state 0 to state j > 0. Starting in state 0, let H(0,j) be the total time spent in state 0 before the first jump from 0 to j. a) What is the distribution of H(0,j)? b) What is the joint distribution of H(0,j) and H(0, k) for different j and k ? In each

4. Suppose that the real function f(z) on a closed, bounded interval I = [a, b] has the property that every value of the function is attained exactly twice; that is, for each y f(I), there are exactly two distict 1, z2 I such that f(z1) = f(xz2) = y. Prove that f(z) is not continuous on
image text in transcribed

Question 7 (1 point) Complete the statement. To find the angle when given the ratio for cosine... a take the cos -1 of the ratio. b take the reciprocal of the ratio. c take the cos -1 of the angle. I AM A STUDENT NEED HELP

When a figure is "in the round," it means that you can see _________ of the figure. Group of answer choices the front, back, and sides the front and sides only the sides only the front

A random number generator was used to generate random numbers along the interval from 1 to 5. The density curve of the generated data is shown. At what value, y, must the blue line be placed in order to have 20% of the data between 1 and y? We need to solve LW = 0.2, where W is the height of the rectangle of interest (here, 0.25). Solving 0.25L =

Select the spreadsheet formula that would correctly calculate the average (mean) of the following values: 25, 50, and 75. Multiple Choice = (25 + 50 + 75 ) / 4 = (25 + 50 + 75) * 3 (25 + 50 + 75) / 3 = = (25 + 50 + 75) / 3

What does a linear trend model imply? Choose the best answer. Question 12 options: That y increases by a constant amount each time period. That y decreases by a constant amount each time period. That y remains constant over each time period

Solve the following inequality.
image text in transcribed

In cell C13, convert one billion liters to cubic kilometers. Format cell C13 as Number with 4 decimal places

Question 9 [4 marks} How many of the numbers from 1 through 9919911} contain exactlyr two 2's and exactlyF one 7'? Examples: [172(12 and 12372 contain exactly,r two 2's and exactly one 7; 22770, 56789, and 31415 do not. Your answer should be an expression involving combinations and ,I' or factorials. You do not have to compute the numerical
image text in transcribed

Make the indicated trigonometric substitution in the given algebraic expression and simplify. Assume 0 less than theta less than StartFraction pi Over 2 EndFraction . StartFraction x Over StartRoot x squared plus 7 EndRoot EndFraction , xequals StartRoot 7 EndRoot tangent theta

Question: Do you think that more could be done now to decrease the remaining homophobia in the States?

No state provides a subtraction modification for a Subpart F income inclusion. The specific rules vary from state to state

I do not know how to go about solving this question 4) Name Derivative Graph Super FRQ (Calculator Inactive) Graph of f ' The function f is differentiable on the closed interval [-6.5] and satisfies f(2) = 3. The graph of f', the derivative of f, consists of a semicircle and three line segments, as shown in the gure above. ape-p: our" arr'Pr'p'
image text in transcribedimage text in transcribed

5 2- Let if = 9 and let W be the subspace of R3 spanned by 5 a) Find p oj 3}] b) Find the distance from Q' to W
image text in transcribed

The following data represent the muzzle velocity (in feet per second) of shells fired from a 155-mm gun. For each shell, two measurements of the velocity were recorded using two different measuring devices, resulting in the following data. Observation123456 794.6790.4792.6793.8794.9790.7 796.3786.1793.5789.6803.2794.6 Construct a 99% confidence

Planning for Instruction Infants and toddlers may be more engaged in drawing if A they are using colorful crayons B they are given jumbo crayons C they are writing on a slanted surface D a teacher sits with them

What is a cross-curricular standard that comes from a different content area in addition to the standard I already have which is CCSS.ELA-Literacy.W.2.1 ? Please provide different content areas and standards that can relate to this standard. Thank you.

32. A random sample of 12 observations is to be drawn from a population with the mean of 40 and a standard deviation of 25. The probability that the mean of the sample will exceed 45 is: A. 0.4207 B. 0.4772 C. 0.0228 D. cannot be computed
image text in transcribed

a) What is the relationship=between=elevation=and=areashighincidences=of-landslides? b) What is=the similarity=between=rainfall=intensity=and=areas-with=high=incidences=of landslides
image text in transcribed

Day One 1 cup of vodka Day Two 1 shot of fireball Day Three 1 cup of hard mike's apple ale. In total, these beverages are equivalent to how many drinks? Dividing by three, what is the average number of drinks you consumed during each of the three days

\f
image text in transcribed

Assume that the random variable X is normally distributed with =70and =16. Compute the probabilityP(x <90) Options: A. 0.1056 B. 0.1446 C. 0.8554 D. 0.8944 E. 0.9015

Consider the following quadratic equation: x2 - 16x + 64 = 0 Step 1 of 2: Using the standard form ax2 + bx + c = 0 of the given quadratic equation, factor the left hand side of the equation into two linear factors. Keypad X Keypad

A survey found that 39% of all gamers play video games on their smartphones. Ten frequent gamers are randomly selected. The random variable represents the number of frequent games who play video games on their smartphones. What is the value of p? A) 0.39 B)0.10 C)10 D) x, the counter

Which of the following are properties of hot/warm air (gases)? (check all that apply) Group of answer choices Sinks/more dense retains moisture rises/less dense expands/takes up more space Takes up less space releases moisture

Kieran subscribes to a text messaging service on his cell phone. His monthly bill for the service is given by the equation b = 0.25t, where b is the bill amount and t is the number of texts. The constant of proportionality in terms of cost per text is Reset Next

Which correlation coefficient reflects the strongest relationship? +.05 +.25 +1.23 -.33

Consider the following data: \f
image text in transcribed

Solve for u in the following formula: a=vu/t. Do not write u= in your answer.

What is the slant height of the pyramid with the following measurements? The height of the pyramid is 11 inches. . The length of one of the base's sides is 6 inches. . The apothem is 5.2 inches. 12.5 in O 11.4 in O 9.7 in 12.2 in

A biologist has a 935-gram sample of a radioactive substance. Find the mass of the sample after six hours if it decreases according to a continuous exponential decay model, at a relative rate of 18% per hour. Do not round any intermediate computations, and round your answer to the nearest tenth. grams X 5
image text in transcribed

What is a flaw with calculating probabilities using the relative frequency method?

given f(x)=square root of x and g(x) = 3x+9, find the domain of f(g(x))

(3x^ 3 - 17x^ 2 + 15x - 25) (x - 5); which of the following represents the "constant" value in the quotient?

For the next three questions, if computing the probabilities manually, carry four decimal digits in your calculations. Compute the probability of two occurrences in three time periods (to 4 decimals). Compute the probability of five occurrences in one time period (to 4 decimals). Compute the probability of six occurrences in two time periods (to 4

Suppose X ~ N (10, 6). This says that x is a normally distributed random variable with mean ? = 10 and standard deviation ? = 6. Suppose x = 20, then x= 20 means that it is \f
image text in transcribed

Let f(x) = x - 3 and g(x) = 3x2 - x + 1. Find each of the following and simplify. a) (fg) (x) = 3x2-x-2 b) (fg)(-4) = 50 c) (fg) (3) = 22
image text in transcribed

describe your product and how it can be helpful to another educator. Grocery Shopping Math Word Problems

A new drug is introduced that is supposed to reduce fevers. Tests are done with the drug. The drug is given to 70 people who have fevers. It is found that the mean time that it takes for the fever to get back to normal for this test group is 400 minutes with a standard deviation of 85 minutes. Find the 95% confidence interval for the mean time

The method to find the 95% confidence interval is to take the x -bar the z value times the standard deviation divided by the square root of the number of observations. For this equation there was a sample of 64, mean of 7.4, standard deviation of 1.64.The confidence interval is 7.4 0.402. Please find an 80% confidence interval for this data:sample

Los dos objetivos de las funciones son: 1) dividir el cdigo para organizarlo en partes ms sencillas y 2) encapsular el cdigo que se repite a lo largo de un programa para poder reutilizarlo. Grupo de opciones de respuesta Verdadero Falso

Showing 200 - 300 of 1517
  • 3 / 16