S
  1. study help
  2. subject categories
  3. sciences
  4. mathematics
  5. march 2021
  6. 26

Mathematics Questions and Answers March 26, 2021

Expert-verified solutions to help you succeed

Decida si esta frase es correcta: Nos ordenaron que nos despertamos temprano. Question 4 options: True False

PLEASE I NEED HELP ASAP ALSO I HAVE MORE QUESTIONS TO ASK \\ nipus In X W raw I X : uygu er X X own: so Cl egiap X \\ - l 1' 'Ca ' - McG H'IIALEILS Mil! ALEIG D Ulk PLEASEINEEDHELPASA Y h lve 'rd l- \\ Elma! X (- C l 9 Secure I
image text in transcribed

Which of the following statements is true about the pitch diameter of a chain drive? Which of the following statements is true about the pitch diameter of a chain drive? The pitch diameter is smaller than the outside diameter of the sprocket. The pitch diameter is equal to the outside diameter of the sprocket. The pitch diameter is measured at the

Suppose that 80% of adults own a car. In a sample of seven adults, what is the probability that exactly six adults will own a car?

\f
image text in transcribed

Link to dataset: https://docs.google.com/spreadsheets/d/1U_Oa-2PGh77YExYxKt8TaB_7YK2EhaDljadQPNws_m0/edit?usp=sharing Use =RANDBETWEEN(1, 100) to create 250 samples of size n=30 each by choosing generating random integer (whole) numbers between 1 and 100.

An advertising executive wants to estimate the mean weekly amount of time consumers spend watching traditional television daily. Based on previous studies, the standard deviation is assumed to be 20 minutes. The executive wants to estimate, with 99% confidence, the mean weekly amount of time to within 5 minutes. a. What sample size is needed? b.

that help solve complex problems. Apart from its applications in various fields, math has practical applications in everyday life. Basic math skills such as addition, subtraction, multiplication, and division are necessary in managing personal finances, cooking, and shopping. Understanding mathematical concepts such as percentages, fractions, and
image text in transcribedimage text in transcribedimage text in transcribed

9) A streetlight is at the top of a 10-ft lamppost. A 6-ft person walks away from the lamppost at a constant rate of 3ft/sec 9) A streetlight is at the top of a 10-ft lamppost. A 6-ft person walks away from the lamppost at a constant rate of 3ft/sec. from the post? a) How fast is the rate of the tip of the shadow moving away from the post when the
image text in transcribed

The Statistics Intelligence Test (SIT) has a mean of 36 and a standard deviation of 11. These values were calculated from a large sample. How can raw scores on the SIT be converted to Statistics IQ scores (with mean of 100 and standard deviation of 15)?

Kindly answer question below while showing work. 10) Use mathematical induction to prove Bonferroni's inequality. That is, show that P(E1E2 - - - En) 2 P(E1) + - - - + P(En) (n 1) Hint: It will also be useful to show for n = 2
image text in transcribed

I need help in resolving this simulates the random experiment of tossing a fair dice over in trials. rl'he output of the function will be both the outcomes of the in trials and the relative frequency estimate of the outcome \"4\" in the experiment. given by: TI. min] = f = ZAz-(w), where 714 is the number of times the outcome \"4" show-up in n
image text in transcribed

A chocolate maker has contracted to operate a small candy counter in a fashionable store. To start with, the selection of offerings will be intentionally limited. The counter will offer (1) product 1 with a mix of one-half cashews and one-half caramels, (2) product 2 with a mix of one-half of caramels and one-half chocolate, and (3) product 3 with

Suppose that demand and supply curves for avocado in Brooklyn are as the followings : Qa = 144 - 24P Q. - -36 + 12P 1 where Qa and O, are quantities demanded and supplied in tons respectively, and P is the price of avocado in dollars per kg. 1) If price elasticity of demand for avocado at price P* is equal to -2/3, how much is P* ? a) $2. 00 b)
image text in transcribed

Suppose that the duration of a particular type of criminal trial is known to have a mean of24days and a standard deviation of8days. We randomly sample 9 trials. Find the probability that the total length of the 9 trials is at least 244 days. (Round your answer to four decimal places.) . 1082 X
image text in transcribed

How do I solve this HW problem Express in terms of i. . 3 -3 = (Simplify your answer. Type an exact answer, using radicals and i as needed.)
image text in transcribed

Consider the integer program below: Max 3 . x1 +4 . 12 s.t 6x1 + 5x2 - 25 3 . x1 + 5 . 2 - 20 1, *2 20 and integer Determine a near optimal solution by a truncated branch-and-bound approach. Con- sider the subproblems using the MUB rule and the smallest number rule as tie- breaker. Stop the branch-and-bound procedure when you can be sure that the
image text in transcribed

I need help with this problem "ll? 30.3 minutes and the standard deviation a twdlstribution lo construct a 98% ' \" of H7 Interpret the results. In a r'andem sample of 24 people, the mean commute time iron was 7.1 minutes. Assume the population is normally distribute condence interval for the population mean 11. What is them mini The condence
image text in transcribed

Thank you for the help! REM (rapid eye movement) sleep is sleep during which most dreams occur. Each night a person has both REM and non-REM sleep. However, it is thought that children have more REM sleep than adults. Assume that REM sleep time is normally distributed for both children and adults. A simple random sample of n1=10 children (9 years
image text in transcribed

Prove the following statement by mathematical induction.For every integer n 0, 7 n 1 is divisible by 6. Proof (by mathematical induction) : Let P ( n ) be the following sentence. 7 n 1 is divisible by 6.We will show that P ( n ) is true for every integer n 0. Show that P (0) is true : Select P (0) from the choices below. (7 0 1) | 6 6 | (7 0 1) 1

for 5 a. Ma Identify the domain and range, then determine 5] 61 Domain: Range
image text in transcribed

Suppose f ( x ) , 0 x 1 , is a continuou s function. (1) Use calculus to find such that 0 1 ( f ( x ) ) 2 d x is minimum. (2) Let x 1 , . . . , x n be a sequence of numbers. Find to minimize x 1 + . . . + x n (3) Find to minimize 0 1 f ( x ) d x

1.)A In the first year of the study, 359 randomly selected Americans were surveyed, with 233 reporting concern about climate change. In the second year, 194 out of 352 randomly selected Americans expressed concern about climate change. Test the claim that the underlying population proportions are different, using a 1% level of significance. a)What
image text in transcribed

6. [-/0.41 Points] DETAILS SPRECALC7 1.1.058. 0/5 Submissions Used Express the inequality in interval notation. -3
image text in transcribed

Determine if the following series converge absolutely, converge conditionally, or diverge. Give complete justification, and state which test or tests you are using. 2. X n=2 (1)n+1 ln n n

A company has to test that two of its products are safe. Product two tests more favorably than product one, for both rats and guinea pigs. As this is true, prove that this statement is correct or incorrect: Product two has a higher total success rate on all subjects tested. (If true, prove it is true. If false, show a counterexample.) Now, If

Question 2 20 pts Solve ADEF'. Round to the nearest whole number when necessary. Give angle measures in degrees
image text in transcribed

1.Ang _____ay tumutukoy sa semantika ng pandiwa sa paksa ng pangungusap. a.komplimento ng pandiwa b.pokus ng pandiwa c.antas ng pang-uri d.gamit ng pandiwa 2.Naipakikita ang pokus ng pandiwa sa pamamagitan ng taglay na ________ng pandiwa. a.kayarian b.panlapi c.salitang ugat d.gamit 3.Sa pagtiyak ng pokus ng pandiwa na ginamit sa

If Sam works on Wednesday afternoon, Teresa works on Wednesday afternoon. Teresa does not work on Wednesday afternoon. Based on the above statements is the following conclusion, true, false, or is there not enough information to determine? Sam works on Wednesday afternoon. True. False. Not enough information

the vertices of rectangle defg have these coordinates: d (4, 6) e (4, 1) f (0,1) and g (0, 6). what is the area of rectangle in square units? enter the correct answer in the box.

Find domain and range for h(x) Use the graphs of f(x) and g(x) to draw the graph h(x) = (f + g) (x). State the domain and range for h(x). Assume f(x) and g(x) are continuous functions. If you want, click on the graph to open it in Desmos. Once you have built h(x), include the share link for your desmos answer in the answer box. CO g(x) O CO
image text in transcribed

a. Add a Trendline to the Monthly Revenue Projections scatter chart. b. Format the trendline to use the Logarithmic option

5. Here are 3 linear systems of equations: c. 5y = 15x +20 b. 10y -20x = 60 a. y = 5x -10 3y =9x +12 2y - 4x =-16 2y - 2r =10 11 Indicate whether the systems above have one solution, no solution or an infinite number of solutions. 6. Tony is an enthusiastic gardener. He plants a My Calculations garden that produces exceptional tomatoes and
image text in transcribedimage text in transcribedimage text in transcribed

True or False? I belive that both N1 + N2 need to be greater or equal to 30 and not "n1+n2" If the underlying populations cannot be assumed to be normal, then by the central limit theorem, the sampling distribution of f1 X2 is approximately normal only if the sum ofthe sample observations is sufficiently largethat is, when n1 +712 2 30
image text in transcribed

While out on a jog, Roger sees a dog walker walking seven different dogs: a shiba inu, a golden retriever, a dalmatian, a pit bull, a Jack Russell terrier, a golden doodle, and a bishon frise. According to the triangle of meaning, what part of the triangle do the actual dogs represent

Hello, I'm going to attach all of the questions as pictures, please also shows easy to understand steps. Still, if specific problems need a little explanation, then a small description would be much appreciated, I hope that's not too much to ask for but thanks in advance! Question 14 2 pts Suppose one of the people (from the above table) is
image text in transcribedimage text in transcribed

When dividing a distribution into four equal parts to determine the IQR, how many quartiles are produced

Find the limit. Use l'Hospital's Rule where appropriate. If there is a more elementary method, consider using it. lim= ( e x + e x 2)/( e x x 1) x 0

A mass on a spring bounces up and down in a simple harmonic motion, modeled by the function s(t)=8 sint where s is measured in centimeters and t is measured in seconds. Find the rate of which the spring is oscillating at t=3 s. Round your answer in four decimal place. (? cm/s)

Researchers watched groups of Dolphins off the coast of Ireland in 1998 to determine what activities the Dolphins partake in at certain times of the day. The numbers in the table below represent the number of groups of Dolphins that were partaking in an activity at a certain times of days: \f
image text in transcribed

Explain in detail usefulness/application of the type of math that is covered in the problem. Include both general (the usefulness of derivatives), or more specific (discuss the type of application that you are choosing.) 500 word (minimum). Write detailed solution to the problem.Provide the following: A written description of the steps you use to
image text in transcribed

Use the figure below to answer the following question. 4 Credit: Desmos, Inc. Which of these pairs of angles forms a linear pair? O 23 and 21 O 23 and 28 O 23 and 27 O 23 and 24
image text in transcribed

I need help for this question 9. A culture of bacteria doubles every 20 minutes. A culture originally consisting of 200 bacteria is left to grow in a petri dish for 2 hours. What is the final number of bacteria in the petri dish after 2 hours? Explain your thought process. [A3]
image text in transcribed

Solve for the variable in the equations below. Round your answers to the nearest hundredth. Do not round any intermediate computations. \f
image text in transcribed

15. National Bearings manufactures bearings at plants located in Portland Oregon, Houston Texas, and Jacksonville Florida. To measure employee knowledge of Total Quality Management (TQM), six employees were randomly selected at each plant and tested. The test scores for these employees are given the following DATA: Managers want to know if, on

A brand name has a 60% recognition rate. Assume the owner of the brand wants to verify that rate by beginning with a small sample of 8 randomly selected consumers. Complete parts (a) through (d) below. a. What is the probability that exactly 7 of the selected consumers recognize the brand name? The probability that exactly 7 of the 8 consumers
image text in transcribed

Peter Crowley, un norteamericano ciego de 57 aos, parti opens in a dialog de Cuba este jueves remando opens in a dialog su kayak para intentar llegar a Cayo Hueso, Estados Unidos, una hazaa indita opens in a dialog que dedicar al deshielo opens in a dialog entre los dos pases, y de estmulo a los limitados fsicos. Lo despedimos en el muelle opens

Use the graph to determine a. open intervals on which the function is increasing, if any. b. open intervals on which the function is decreasing, if any! c. open intervals on which the function is constant, if any
image text in transcribed

differential equations show complete solutionNote: use elimination method \f
image text in transcribed

According to the information that comes with certain prescription drug, when taking this drug, there is a 10% chance of experiencing a sore throat (S) and 30% chance of experiencing a fever (F). The information also states that there is a 6% chance of experiencing both side effects. what is the probability of experiencing a sore throat or a fever?

What are the differences between a one tail and a two tailed test when c onducting hypotheses tests?

ASSIGNMENT INFORMATION This Assignment is worth 20% of the total assessment for this unit. This assignment will be marked out of 80 and scaled down to being out of 20. The assignment has 5questions. There is a lot of information that needs to be identified for this assignment. You should start now. Do not leave it for a later time. If you have
image text in transcribed

(a) Find T(e1), T(e2), T(e3) and determine the matrix A of T. (b) Determine if T is one-to-one. Justify your answer. (c) Determine if T is onto. Justify your answer. 5. (6 points) Let T : R3 - R* be a linear transformation given by 1 T T O and T = (a) Find T(el), T(ez), T(e3) and determine the matrix A of T
image text in transcribed

A bank's customers arrive at an automatic teller machine at a rate of 18 an hour.The service transaction rate is 12 customersevery half an hour. What is the average waiting time (in minutes) before service begins? What is the average number of customers waiting for service? What is the average time (in minutes) a customer spends in the system?

Write a differential equation that has as its only solution the trivial solution y = 0. Explain your reasoning

SAT verbal scores are normally distributed with a mean of 430 and a standard deviation of 120 (based on data from the College Board ATP). (a) If a single student is randomly selected, find the probability that the sample mean is above 500. (b) If a sample of 35 students are selected randomly, find the probability that the sample mean is above 500.

\f
image text in transcribed

Please help me answer these question and provide a detailed visual step by step method. I will appreciate that alot :) 1. Find the rank of A, the nullity of A and the left nullity of A given the following information: 1 23 456 . . 001 -110 (a) The matrix A with row echelon form R = 000 010 000 001 (b) A 7 x 5 matrix A, such that the rank of AT =
image text in transcribedimage text in transcribed

The National Center of Education Statistics conducted a survey of high school seniors, collecting test data on reading, writing, and several other subjects.Here we examine a simple random sample of 200 students from this survey, and their scores on the reading and writing tests. The observed differences in scores (for reading score minus writing

In one particular month, a person has a balance of $3,880 on their credit card for 4 days. They then make a purchase and carry a balance of $2,950 for the next 12 days. Then this person makes another payment and carries a balance of $1,600 for the remaining 15 days in the month. What is their average daily balance rounded to the nearest cent?

uelque chose boire? Claude and Sylvie's guests arrive, and Claude offers them drinks. Complete the responses by replacing what is in parentheses with the pronoun EN, the correct form of the verb, and other necessary elements. Marie: Est-ce que vous avez (de l'eau minrale)? Claude: Oui, bien sr, nous Question Blank 1 of 5 type your answer... .

Which sequence of steps correctly describes the steps of lay-rescuer CPR before compressions begin

The positions of captain and assistant captain have to be assigned for a school hockey team. If there are 15 players on the team, in how many ways can the captain and assistant captain be assigned? Explain your method

Lonestar Landscaping constructed a 3-foot wide sidewalk all the way around a small grassy patch at a neighborhood park as shown in the diagram below. The grassy area is rectangular in shape with dimensions 20 feet by 16 feet as shown below. A rectangle with a border is shown. The rectangle is shaded green and labeled 20 feet by 16 feet. The border

CommonY FCCQUICK: With a commitment to her staff having been made, Ramsay believes Whiting also needs to know how the community feels. So. Ramsay hosts an open forum to allow the community to vent their frustration and discuss why they haven't supported Cafe Hon. One attendee mentions that Whiting tried to "appropriate an identity," equating it to
image text in transcribed

The composition of the Fund XY portfolio is as follows: :toc Shares Eric A 260,000$40 B 360,000 45 C 460,000 20 D 660,000 25 The fund has not borrowed any funds, but its accrued management fee with the portfolio manager currently totals $45,000. There are 4 million shares outstanding. What is the net asset value of the fund
image text in transcribed

From Probability Book by Jim Pitman CH.1 Review #16 16. A dormitory has n students, all of whom like to gossip. One of the students hears a rumor, and tells it to one of the other n 1 students picked at random. Subsequently, each student who hears the rumor tells it to a student picked at random from the dormitory (excluding, of course,
image text in transcribed

The potential energy of a mass, m, held at a particular height, h, above the ground against the force of gravity, g, is converted into kinetic energy when it is released and it moves towards the ground at a velocity, V. Use dimensional analysis to confirm the relationship: 2 mmvv =mmmmh 2
image text in transcribed

Use the Theorem of Pappus to find the volume of the given solid. The solid obtained by rotating the triangle with vertices (4,2), (4,4), and (7,3) about the x -axis

3. In class, we identied 5 canonical groups of order 8: Z8, 23,1 X Z2, Z2 x 2'12 X Z2, Dd, and (23. Note that |U(15)| : |U(24)| : 8. Find which of the canonical groups above U(15) and U(24) are isomorphic: to. For each :anoni :al group, either give an explicit isomorphism, or an isomorphic invariant which they do not share. (You do not have to
image text in transcribed

A foundational concept in Calculus is the study of the relationship between continuity and differentiability. In this discussion, we will explore an example of determining whether a function is continuous and differentiable at a given point. Requirements for Discussion Assignments You are required to post one initial post and to follow up with at
image text in transcribed

Hi could I get help with the type of graph this is and interpreting this graph? Would this be a scatter plot? and an explanation on the relationship it shows? thank you very much. Educational attainment, at least completed primary, population 25+ years, total (%) (cumulative) [SE.PRM.CUAT.ZS] vs. Poverty headcount 110 ratio at national poverty
image text in transcribed

Authorized aid: a graphing calculator Unauthorized aid: anyone and anything not mentioned above 1. The graph below shows your height above the ground on a Ferris wheel. The wheel is rotating counterclockwise. h (meters) 1 Rev 35 20 A 5 1 (min) 01234 6 8 V a) direction at t = 3 is (that is, upward or downward) upward b) position at t = 3 is (that
image text in transcribed

Asking for help with this again. The Conch Cafe, located in Gulf Shores, Alabama. features casual lunches with a great view of the Gulf of Mexico. To accommodate the increase in business during the summer vacation season, Fuzzy Conch, the owner, hires a large number of servers as seasonal help. When he interviews a prospective server. he would
image text in transcribedimage text in transcribedimage text in transcribed

a.Your child weighs 16 kg.Your research indicates that 40 mg/kg/day is the recommended dosage.What would the safe dosage be for your child in milligrams per day? b.The doctor orders 300 mg of an antibiotic to be given to your child every 12 hours.Is this dosage safe according to your research?

If $5,000 is invested at 9% annual interest compounded quarterly, how long would it take for the account balance to reach $20,000? Round your answer to the nearest tenth.

Which distribution do the following random variables follow? State their parameters explicitly, (e.g, if the random variable follows the binomial distribution, state both the values of n and p.) If the random variable does not follow any "named" distribution from class, briefly describe how you might construct a probability mass function for it.

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $36.98. Find the probability that a randomly selected bill will have an amount greater than $165, which the city believes might indicate that someone is wasting water. Would a bill that size be considered unusual? A) Probability is 0.06, which is usual as it is not

8% of all Philadelphia voters believe that Bob would make a good mayor. Suppose that we take a random sample of 35 voters and are interested in finding the probability that the proportion p of voters in the sample who believe Bob would make a good mayor is at least 0.10. ? True False In a sample of ten sales invoices the mean balance was Xbar =

Using the Below Data Set: Compute the distribution of the estimator . and compute, using the data set below, an exact one sided 95% confidence interval for o2 Conduct an approximate hypothesis test under a 5% level to test Ho:0- 2 1 verses Hi:o'
image text in transcribedimage text in transcribedimage text in transcribed

#23 A political candidate has asked you to conduct a poll to determine what percentage of people support him. If the candidate only wants a 0.1% margin of error at a 99% confidence level, what size of sample is needed? When finding the z-value, round it to four decimal places. z-value_________ Question 5 Oxnard College reports your GPA on a 4.0
image text in transcribedimage text in transcribedimage text in transcribed

Which question (Q1 through Q18) correlates the best with this mean? HINT. Use bind_cols to bind the means you found in the last question to wA. This gives you a new tibble with 19 columns and 81 rows. Which Q correlates best with the last column? What question is this, in English?

The calculated theoretical number of workstations should be Blank______. Multiple choice question. greater than three. rounded down to the nearest integer. rounded up to the next highest integer. calculated using the first task

Questions (27-30) 8 In a certain city, the average temperature (X) during month of August is nicely modeled by a normal distribution with mean of 54 degrees centigrade and variance 25, then: (27) The percentage of months of August that are expected to have temperatures more than 40 in this city is: A B C D 99.74 % 16.60% 84.13% 17.36% (28) P(X A B
image text in transcribed

Question 6 Consider the following subset of the real number line. How can this set be expressed using inequalities
image text in transcribed

A student wrote: 488 is divisible by 4 since the sum of digits is divisible by 4. Choose below all statements that are true in relation to student's statement. Group of answer choices 488 is indeed divisible by 4 Student applied the test of divisibility by 4 correctly. Quiz saved at 2:03pm

(c) Find the profit from this strategy if yield cu moves: (i) up to 8% pa and (ii) down to 5% pa. (d) Explain why in practice it may be difficult profit from the cash and $duration neutral butterfly. (e) Explain the major differences theen me 50-50 butterfly strategy and the cash and $duration neutral butterfly
image text in transcribed

Prove that the ideal I = (2,1 l \\j 5) is not a principal ideal in R = th . (Hint: Consider the function N : Z[w./5] > N given by N{z) = 22, and use the fact that z is a unit. i N{z) = 1.)
image text in transcribed

help please Mr. Kelly wants to retire from teaching to pursue his real passion of quilt making. He starts a company called Kelly's Quiltys that produces top of the line Geometric Quilts formed from various geometric shapes (he majored in Quiltometry in college). Using his math skills he creates an average cost per quilt function. This rational
image text in transcribed

A leaky bucket full of sand has a weight of 25 pounds. The bucket is to be lifted to the top of a building 15 feet tall by a rope weighing 1 lb/ft. Every foot the bucket is lifted results in a loss of 0.2 pounds of sand. Find the work done lifting the bucket to the top of the building.

Which is the stronger axis of the box beam (x or y). Image is for understanding, not dimensions. Read description below. Overall height = 1.1 x overall base, top and bottom walls have the same thickness as the right and left walls

1. Suppose we have a box full of 500 golf balls.In the box, there are 50 Titleist golf balls. (a) Suppose two golf balls are selected randomly without replacement.What is the probability they are both Titleists? (b) Suppose a golf ball is selected at random and then replaced.A second golf ball is then selected.What is the probability they are both

I need help with the following homework problem: Let X(n, p) denote a binomial random variable with parameters n and p. If p 1 >=p 2 , show that X(n, p 1 ) >= st X(n,p 2 )

Question 5. Based on the percentage frequency histograms and summary statistics, discuss two similarities in the shape of the distributions. Quote relevant evidence for your answers.Question 6. Compare the central tendency of the departure and arrival delay time distributions. What is your overall observation? Discuss the best measure for this
image text in transcribed

5. For f(x) =2x*+7x - 15 a) Determine the vertex of the function by completing the square (3 marks) b) State whether the vertex is a maximum or minimum. Explain your thought process. (1 mark) c) State the axis of symmetry. Explain your thought process. (1 mark) d) Use a method of your choice to determine the zeros of the quadratic function. (2
image text in transcribed

A program was created to randomly choose customers at a clothing store to receive a discount. The program claims 22% of the receipts will get a discount in the long run. The owner of the clothing store is skeptical and believes the program's calculations are incorrect. He selects a random sample and finds that 17% received the discount. The

Question 4: Nonparametric tests are just as powerful as their parametric counterparts. True False Question 5 (1 point] Question 5: The Mann-Whitney U test is the nonparametric counterpart for which parametric test? One-sample t-test. Two-dependent sample t-test Two-independent sample t-test. OKruskal-Wallis Test
image text in transcribed

Addition and subtraction algorithms used with larger numbers: O are much harder to understand because the numbers are bigger. O cannot be modeled with base-10 materials. O parallel the situations, stories, and rules as smaller numbers. O should be introduced when children can count to 100

\f
image text in transcribed

Moon Relative Surface Gravity: 0.17 b. Which is smaller, the relative surface gravity of the Moon or 4/25

Showing 1300 - 1400 of 1519
  • 14 / 16