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Mathematics Questions and Answers January 02, 2022

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suppose mary wanted to know the probability of getting heads on a coin that she was told was not fair. what method should she use? What would she need to need to compute to get the probability ?

Consider the hospitality industry. Describe special causes and common causes in this setting and discuss the role of quality control and quality improvement. Explain the organizational barriers that prevent a company from adopting the quality philosophy. Describe some specific action plans to remove such barriers. American Express has access to

Researchers are interested in the mean age of a certain population Let us say they are asking the following questions: can we conclude that the mean age of the population is different from 30years?The data available to the researcher are the ages of a simple random sample of 10 individuals drawn from the population of interest.The sample mean is

Can you answer the following questions and if they have needed steps show them please 1-8 I. Write an equation that expresses the fact that a function [ is continuous at the number 4. 1, If f is continuous on (2, =), what can you say about its graph? [3.] (a) From the graph of f, state the numbers at which f is dis- continuous and explain why. (b)
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Consider a physical system, the behaviour of which is captured using the following time-varying differential equation. 742 + kx' =0 is a positive real number. Let a(t) be the general solution of this equation. Here, t denotes time. It is known that I(0) = A and i(0) = 0. A is a positive real number. let T' be the minimum positive time such that r
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In order to understand the statistical difference in nominal or ordinal data you have collected, the following statistical test would be used. Group of answer choices Student t-test Chi-square Regression analysis Bonjovi test

If one serving of the cheese crackers that I am eating contains 20% of the DV for fat, how many servings of cheese crackers can I eat before I exceed the DV for fat? . five four three two

Consider that in 2019 U.S. household income had a mean of $64,000, a standard deviation of $12,000, and a frequency distribution that was mound-shaped and symmetric. Determine the z-score for someone with an income of $40,000

Hi, I need help creating these charts and tables: frequency chart, histogram, descriptive statistic table, measurement scale, measure of central tendency, and an evaluation of what all data shows. It would be helpful to understand if there is a relationship between PM size and employee health. Air quality data have been collected from 103 job
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Will Byers wants to buy a new computer to spy on Russians with, but needs a very good one. There is a computer company that claims that one of their models will get a 3DMark performance test score of 20000 (or greater). He buys a sample of 8 computers and got the following scores: 19883, 19825, 19938, 20008, 19984, 20044, 19807, 19869. Assume that

Biostatistical Theory Course. Topic: Hypothesis Testing \f
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Applications of integration: Velocity. Velocity is the rate of change of displacement. The velocity of a particle in m/s is given by v(t)=4t^3-16t. What is the net displacement (in m) of the particle between time t=2 s and time t=4 s?

Mary_______ upset with Tom for pullingher hair last Monday. 1. is2. are3. was4. were

Choose the appropriate variables to run an independent samples t-test. You are only required to use 10 scores. Research Question. Null and Alternative Hypotheses. Specify the alpha level. Identify the Critical Region. Compute the t statistic using 10 scores and indicate what 10 scores you used (pooled variance, estimated standard of error). Make a

_________________ rates from previous studies should be considered when selecting an instrument. Group of answer choices Error Pass Response Fail

The diagram represents students in a high school English class. Each dot represents one student. A student is chosen at random from the English class. The ovals show students who are part of different groups: B = Students who have blue eyes C = Students who take a computer programming class Which model represents B or C

0 and fewer than 15 successes in 24 rolls. Bold text start(7 marks)Bold text End Without further clarifying, a news report provided a binomial confidence interval to describe the probability of an event as between 0.591 and 0.749 based on an experiment with 25 trials

1. Assume X ~ ? (10, 4) where? implies unknown. n=100 i. What is the (approximate) distribution of if the sample size is 100? Briefly discuss the theorem underlying your answer. ii. What happens to the variance of as the sample size increases? Draw a diagram and explain. iii. What two values of (symmetric around the population mean) contain a) 75%

A regression equation is = 1.213 - 2.267x Calculate the predicted value for x = -1. Select one: a. 1.213 b. 3.48 c. 2.267 d. 0.52

Tech-prep schools enable students to: obtain a four year bachelor's degree after high school. obtain a two-year associate's degree with their high school diploma. avoid liberal arts classes. earn a high school equivalency diploma

2. (10 points) An experimental trial produces random variables X, and X2 with correlationr = E[XX2]. To estimate r, we perform / independent trials and form the estimate 1 r Rn = = n X, (i) X2 (i ) where Xi(i) and Xx(i) are sample of X, and X2, respectively, from trial number i. Show that if Var[X X] is finite, then R1, R2, .. is unbiased,
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Select all that apply Identify the measures of central tendency. (Check all that apply.) Multiple select question. the median the variance the standard deviation the mean

Did most of it, just don't understand these ones Write and solve an equation to find the missing angle measures. 11. 12. (4+ 5X) (x + 2)0 13. 14. (3x + 12) (6% + 4) 320 15. 16. (4+ 2x) (2x + 1) \\(X+ 2) (3x + 1)0
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how to get the q-q plot for each variable of hot and cold

The derivative of the quotient of two functions isthe quotient of their derivatives. True or False?

Se realiz una encuesta entre la plantilla de una empresa, con la intencin de medir los factores de riesgo en la salud organizacional. Dado que se desconoce la media poblacional en las variables cuantitativas, y hay variables cualitativas, se utilizarn pruebas no paramtricas. Seleccione del listado las pruebas que pertenecen a este grupo (puedes

Which of the following is true of alpha, the Greek letter associated with exponential smoothing? The closer the value is to 1, the slower the forecasts will react to changes in demand. It is usually a number between 1 and 5. When the value is at least 2, then the most recent estimate is deemed correct. It measures how much weight is given to the

At a certain factory, when the capital expenditure is K thousand dollars and L worker-hours of labor are employed, the daily output will be Q=120*K^(-0.5)*L^(1/3) units. Currently capital expenditure is 400,000 dollars (K=400) and is increasing at the rate of 9,000 dollars per day, while 1,000 worker-hours are being employed and labor is being

Please verify my answers. Q2. Test a hypothesis with bivariate regression. Suppose a researcher wishes to use the same data set from Q1 to answer the following question: Can the average number of years adults have spent in schooling in a state significantly predict crime rate in that state? A. What is the null hypothesis being tested for this

Which of the following statements correctly describes the use of sample statistics to estimate population parameters? Select all that apply. Group of answer choices The sample variance (s^2) is used to estimate the population variance (^2). The population mean () is directly observable from sample data. The sample standard deviation (s) is used to

please help You go to the doctor and he gives you 13 milligrams of radioactive dye. After 12 minutes, 5 milligrams of dye remain in your system. To leave the doctor's office, you must pass through a radiation detector without sounding the alarm. If the detector will sound the alarm if more than 2 milligrams of the dye are in your system, how long
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Problem 6. Let X ~ N(u,0?) and let a,b be constants with a # 0. Show that Y = aX + b~ N(ap + b, a'0?). Hint. Write down a formula for the cdf P(Y
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A simple random sample of 400 persons is taken to estimate the percentage of women in the Boston Teacher's Union whose total membership is 8000. Of those surveyed, 277 teachers are females. We can be 95 percent confident that between percent...? and ...percent of the teachers in the union are females.

The estimated standard error of the means (SDx) is an approximation of the standard deviation of a sampling distribution of means

A survey of twins in America asks the following question, "Do you support removing Confederate monuments from public spaces." Strongly support Support Neither support nor oppose Oppose Strongly oppose Thousands of MZ and DZ twins complete the survey. The results show that the correlation among all MZ twins on the Confederate monument question is

Use graphing technology to find the x -coordinates of the critical points, accurate to two decimal places. Find all relative and absolute maxima and minima. y = 2 x^2 20( x 1)^2/3 with domain [4, 4]

Show an example of below question: At a homeowners' association meeting, a board member can vote yes or vote novote yesorvoteno on a motion. There are two motions on which each board member must vote. Complete parts (a) Determine the number of points in the sample space. (b) Determine the probability that a board member votes yes on both of the

Possible grades for a class are A, B, C, D, and F. (No +/'s.) How many ways are there to assign grades to a class of nine students?

0.3439 y he will hit at least one home run? (c) If he comes to bat 4 times in a game, what is the expected value for the number of home runs he will hit? + 3/9 points Previous Answers My Notes + Ask Your Teacher Data shows that 81% of the people in a certain population are right-handed. A group of 7 people from this population are selected at
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Write-in or call-in opinion polls are examples of _____ samples because they appeal to a special population. voluntary response stratified convenience simple random

The following problem refers to strings in A, B, ..., Z. How many three -letter strings are there that begin with R ?

Consider the linear regression model: where 6 ~ N(0, 1). The Y's are considered random and the Xi's are considered fixed. Suppose a random sample of size n is drawn. Question: What is the Cramer-Rao lower bound for estimation of exp(B)
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At 0 Celcius, the heat loss H (in kilocalories per square meter per hour) from a person's body can be modeled by

1. Describe the similarities and differences between qualitative and quantitative research. (5 pts). 2. If you wanted to use the strongest quantitative methodology possible, what type of research study would you construct? (5 pts)

If you have one bag with 7 red and 6 green blocks in it, and another bag with 2 yellow and 9 blue blocks in it, what is the probability that if you pull one block from each bag you get one red and one blue block
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ONLY DO 6 6. When x'+ bx + cx-15 is divided by (x -3) the remainder is 33, and when divided by (x +1) the remainder is -7. Determine the values of b and c. 7. Sketch each of the following functions. Clearly label the x-axis. 2
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Refer to picture The table below shows a summary of Ali's credit card statement for the month of October. Transaction types Amount Unpaid balance from September (Beginning balance on October 1) $542.65 Purchases made during the month of October $149.89 Payments made during the month of October $27.10 Complete the parts below. Write your answer to
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A call center receives an average of 16 calls per hour. Assuming the number of calls received follows the Poisson distribution, what is the variance in the number of calls per hour?

A random sample of 330 cases or observations reveals 190 successes. Test whether the population proportion of successes is different from 0.50 (let = 0.03). a) State the null and alternative hypotheses associated with the test. (0.25 point) b) What is the critical value of the associated test statistic? (0.25 point) c) What is the calculated value

Working backwards on the z -table, what is the z-score associated with 0.22%? Answer: The z -score is

You roll a die. What is the probability of rolling a number greater than 3 and rolling an even number? 5/6 1/2 3 1/3

Why do you think the null hypothesis is contained within the cutoff boundaries and that you have to have a z-score more extreme than the cutoff in order to reject it? Why wouldn't it be the other way around?

If the value of the standardized test statistic is 2.5, A) conclude that the null hypothesis and the alternative hypothesis are the same. B) we reject the null hypothesis at the 5% significance level. C) we fail to reject the null hypothesis at the 5% significance level. D) we reject the alternative hypothesis at the 5% significance level. E) we

I need help creating solvable application problem based requirements and based on the figure below (the figure changes based on what t equals. I have adjusted it a few times to show general movement). Problem Requirements : 1) You must specifically require that if this problem was given to a friend, they would be able to determine an equation
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Sketch polynomial function \f
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State whether the data described below are discrete or continuous, and explain why. The numbers of telephone lines in different regions Question content area bottom Part 1 Choose the correct answer below. A. The data are continuous because the data can only take on specific values. B. The data are continuous because the data can take on any value

please solve this Orignal data POP 1991 112.61 1992 115.54 1993 118.5 1994 121.48 1995 124.49 1996 127.51 1997 130.56 1998 132.35 1999 136.4 2000 139.55 2001 142.76 2002 146.02 2003 149.32 2004 152.66 2005 156.04 2006 159.46 2007 162.91 2008 166.41 2009 169.94 2010 173.1 2011 177.1 2012 180.71 2013 184.35 2014 188.02 2015 191.71 Apply suitable

15. From these numbers: 93. 175. 129. 92. 75. 94.116. 100 Do you want to own your own candy store? Wow! With some interest in running your own business and a decent credit rating, you can probably get a bank loan on startup costs for franchises such as Candy Express, The Fudge Company, Karmel Corn, and Rocky Mountain Chocolate Factory. Startup

See the included attachment. Create two multiple-choice problems (one based around Sigma Notation and the other one based around the Geometric Series) and provide a complete solution (i.e. answer explanation) for each problem. As part of your answer, provide four (4) incorrect answers and include a single sentence reason why you chose each of the
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Which of the following statements about empirical and theoretical probabilities is true? Group of answer choices Theoretical probabilities are only estimates where their accuracy depends on the sample size studied Empirical probability is based on historical data or from the observation of facts Theoretical probability is based on actual

A student's performance on a standardized test is sometimes indicated by a confidence interval rather than by a single score. The rationale behind this practice is that: Group of answer choices some tests have extremely vague scoring criteria. the computation of a single score is not possible for some tests. a single test score is almost always

Please help solve 7. (16 pts, varied) Refer to the following data and scatterplots to respond to questions 7a-f. Individual ARe Score on Earning Potential 1 24 5 2 56 19 76 E 80 7 35 14 32 12 42 18 17 35 20 12 36 16 13 29 10 14 60 19 15 65 13 16 78 Some on Cainby Potential Page 4 of 6 EDUC 606- were on Caring Petrolia AgeFigure A represents a
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Determine whether the data described below are qualitative or quantitative and explain why. The types of movies left parenthesis drama comma comedy comma etc. right parenthesis Question content area bottom Part 1 Choose the correct answer below. A. The data are quantitative because they consist of counts or measurements. B. The data are

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a) (2 points) What percent of all respondents are male and visited fast food 3 times? b) (4 points) Test the following hypothesis using the Mann-Whitney U: 0: The distributions of Times visited... are equal for male and female. : The distributions of Times visited... are not equal for male and female. Report the conclusion, including the value of

Would you recommend using the regression equation to predict the maintenance cost? Explain your answer. How reliable is this prediction?

o The Poisson distribution may also be used to approximate the binomial distribution. Explain this relationship with an example

_ A Produce graphs of f that reveal all the important aspects of the curve. Then use calculus to find the following. (Enter your answers using interval notation. Round your answers to two decimal places.) fx) = 2x5 4 3x5 + 140x3 - 130x2 Find the interval(s) of increase. Find the interval(s) of decrease. Find the inflection points of the function.
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Which of the following statements is false? Question 5 options: A multivariate regression has one dependent variable A multivariate regression has more than one independent variables A bivariate regression has two variables - one dependent and one independent A multivariate regression has more than one dependent variables

A light bulb factory produces 1,287 light bulbs every hour. Approximately 3.95% of the light bulbs are defective, and do not work. Using the binomial distribution, what is the standard deviation of the number of defective bulbs produced in an hour?

A survey was given to a random sample of 1150 residents of a town to determine whether they support a new plan to raise taxes in order to increase education spending. Of those surveyed, 276 respondents said they were in favor of the plan. Determine a 95% confidence interval for the proportion of people who favor the tax plan, rounding values to

he series Xt = WtWt1. where Wt is a mean zero Gaussian white noise process

When a manufacturer of computers starts to produce its own computer components, the manufacturer engages in Blank______ vertical integration. Multiple choice question. backward full forward linear

Imagine you would be assigned the task of modeling the process of how a clothing order is processed by your favorite online clothing retailer. How can you systematically gather the required pieces of information about this process? Approximately how long would it take to gather this information? Assume the process has 10 major activities,

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The critical t value for p < .05 represents the ______

2. In early days, before it was a well-known company, FedEx undertook a campaign to promote the use of its Courier packages (now called FedEx Paks). Each customer was targeted for sales promotion. Sales representatives visited customers and worked to increase their use of the packages. Some of the customers were already aware of the Courier
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I need some help with these papers please. 10:57 POAF (2) - Saved . . . PROCESS OUTPUT ANALYSIS FORM Process: Date: Characteristic Measured: Form Completed By: Process Mean (X ) = Nominal Value = Standard Deviation (6) = Upper Specification Limit (USL) = (30) = Lower Specification Limit (LSL) = Process Capability (60) = Specification Range (USL -
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All parts of the problem are below, the graph, the data, and then the question. Green NotGreen Total Milk Chocolate 8 33 41 Dark Chocolate 4 38 42 Total 12 71 83 The randomization distribution above is based on 100 samples to test if this sample provides evidence that the proportion of candies that are green differs for the two types of M&M's,
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17) A forensic psychologist tests the extent to which the age of a criminal ( X ) predicts the age of the victim ( Y ) for nonviolent crimes. The psychologist uses the case files to record the age of five criminals and the age of the victim in those cases. The hypothetical data are listed in the following table. Age of Criminal Age of Victim X Y
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Suppose that the total cost of producing amounts x and y of two goods is TC = 3x + 4y - xy , and the prices (per unit) at which those amounts could be sold are px= 23 - x and py = 34 - y . (a) Find profit as a function of output. (b) Find the outputs of the two goods that give the maximum profit. (c) How do you know that profits are at the maximum?

Consider a closed economic system consisting of three industries: Telecommunications (T), Hydro Electric (H), and Service (S). Suppose these industries have the following exchange table: Distribution of Output Purchased By (T) (H) (S) (T) 0.1 0.6 0.4 (H) 0.2 0 0.4 (S) 0.7 0.4 0.2 For example, column 1 describes the total economic output of the

For a sample of 9 regions, the average summer temperature and amount of rainfall (mm) was measured during one summer: Temperature 18 22.1 23.5 24.6 25.8 26.7 27 28.7 29.8 Rain 56.2 52.1 48.3 49.7 40.2 36.1 37.3 25.4 20.5 What percentage of the variation in rainfall is explained by average summer temperature?

Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate. Voltage measurements of batteries: 1.5 Upper V comma 3 Upper V comma 4.5 Upper V comma 6 Upper V comma and 7.5 Upper V Question content area bottom Part 1 Choose the correct answer below. Ratio Ratio Ordinal Nominal Interval Interval

A pension plan's funded status is, at a minimum measured

A farmer has some land on which she plans to grow wheat and corn. Each acre of wheat requires4 hours of labor and$20 of capital, and each acre of corn requires16 hours of labor and$40 of capital. The farmer has at most800 hours of labor and$2400 of capital available. If the profit from an acre of wheat is$80 and from an acre of corn is$100 , what

En una investigacin sobre hbitos de consumo durante la pandemia por coronavirus, se midi, entre otras cosas, la cantidad de personas que viven en la casa. Cul de las siguientes opciones es la ms adecuada para la columna "Nombre" de la variable en la vista de variables? Num_personas Grupo de personas Var0001

Workie DL, & Tesfaw LM. (2021). Bivariate binary analysis on composite index of anthropometric failure of under-five children and household wealth-index. BMC Pediatrics , 21 (1), 332. https://doi.org/10.1186/s12887-021-02770-5 Provide a critique of the article. In the critique, include responses to the following : What is the research design used

Module 3 Discussion: Data Analysis in Your Professional Field As a future data analyst, I anticipate using database software like SQL or Microsoft Access to handle large datasets. SQL, in particular, is powerful for managing and manipulating data and is widely used in data analysis. Additionally, I will use statistical software such as SPSS,

In 2019, first-year college students were found to be Blank______ interested in the teaching profession than first-year college students were nearly fifty years earlier. Multiple choice question. more as less

Q3. Find the absolution maxima and minima of the functions on the given domains. (a) f(x, y) = x2 + xy + y2 - 61 on the rectangular plate 0
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Suppose that the distribution for total amounts spent by students vacationing for a week in Florida is normally distributed with a mean of650 and a standard deviation of120 . Suppose you take a simple random sample (SRS) of 50 students from this distribution. What is the probability that a SRS of 50 students will spend an average of between600

Create a pie chart with the following categories: Red: 5%, Blue: 10%, Green: 40%, Yellow: 5%, Orange: 0%, Purple: 23%, Brown: 5%, White: 5%, Pink: 5%, Black: 2%

The corporate HR department of a major Canadian financial institution is grouped by function; for example, there is a compensation group, a recruitment and selection group, a benefits group, and so on. Each group within the HR function has the same hierarchy consisting of administrative assistants, HR analysts, HR specialists, and HR managers. In

Help me with this, this is the last chance to get it right. Problem #5: Given a continuous function f(x) where f (3) = 2 and f(9) = 14, which of the following equations must have a solution on the interval (3, 9)? (i) f(x) = 0 (ii) f(x) = 14 (iii) f(x) = 8 (A) (ii) only (B) (i) and (ii) only (C) (i) only (D) (ii) and (iii) only (E) (iii) only (F)
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In 2016 the Better Business Bureau settled 85% of complaints they received in the United States. Suppose you have been hired by the Better Business Bureau to investigate the complaints they received this year involving new car dealers. You plan to select a sample of new car dealer complaints to estimate the proportion of complaints the Better
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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 random sample of n 1 =10children (9 years old) showed that they had an

21. You work for a company in the marketing department. Your manager has tasked you with forecasting sales by month for the next year. You notice that over the past 12 months sales have consistently gone up in a linear fashion, so you decide to run a regression the company's sales history. If 10 months are sampled and the regression output is
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1. The following is taken from a State of the Park Report for Banff National Park. Table 9: Visitor Numbers 2004 2005 2006 Total visitors 3,135,727 3,164,906 3,281,435 Total visitor days 7,453,465 7,518,997 7,784,044 Total visitors have increased by 4.6% and total visitor days by 4.4% in this period. Group tour visitors have increased slightly,

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