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Mathematics Questions and Answers March 09, 2023

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MATH 136 Spring 2015 Assignment 9 Topics: Elementary matrices, determinants Due: 3:00 pm, Wednesday, July 15th Last Name: First Name: I.D. Number: Section: Mark (For the marker only): Instructions: Submit your solutions in the same order as that of the questions appearing. Your solutions must have legible handwriting, and must be presented in

(1 point) Estimate the quantity using Linear Approximation and find the error using a calculator. (1/sqrt(97))-(1/sqrt(98))= The Linear Approximation is: f ? The error in Linear Approximation is:?

The following table represents the sales data for the years 2003 2012. The first 5 year moving average from this data set will be positioned in the year 2005, since it is the middle year of the 5 year series. Which of the following is the first five-year moving average from the following data set: Year Sales ($M) 2003 4 2004 6 2005 5 2006 8 2007 9

Evaluate the intregal ( use C for the constant for intregation) the intregal of e^6theta sin (7theta) dt theta

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A simple linear model was fitted to experimental data in which the response variable is a drug release rate(% released / sqrt of time) and the independent variable is the surface area to volume (mm^2 / mm^3). The Y-intercept in the model is equal to 7.31 and the coefficient of the predictor is equal to 35.92. Predict the drug release rate for a

Forty-nine (49) high school freshmen were randomly selected for a national survey. Among survey participants, the mean grade-point average (GPA) was 2.7, and the standard deviation was 0.4. What is the margin of error, assuming a 95% confidence level. (A) 0.050 (B) 0.057 (C) 0.975 (D) 2.011 (E) None of the above.

Assume that the heights of men are normally distributed with a mean of 69.8 inches and a standard deviation of 2.8 inches. If 64 men are randomly selected find the probability that they have a mean height greater than 70.8 inches. 0.9979 0.0021 0.0210 0.9005

We wish to estimate the population mean of a variable that has standard deviation 70.5. We want to estimate it with an error no greater than 5 units with probability 0.99. How big a sample should we take from the population? What happens if the standard deviation and the margin of error are both doubled? explain and show calculations

Store 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 Sales 1695712.620 3403862.053 2710352.905 529215.459 663686.654 2546324.335 2787046.202 612696.054 891822.033 1124967.965 909500.976 2631166.881 882972.654 1078573.124 844320.194 1849119.029 3860007.316 826573.880 604682.868 1903611.600

A study investigated the cost of Botox injections at clinics in a large city. A random sample of bills from 28 Botox procedures had a sample mean of $452, with a corresponding 95% confidence interval of ($430, $474). Suppose that the assumptions of the t procedures are reasonable here, so the confidence interval methods are valid. Which one of the

15. A bullet is fired vertically upward in a controlled test environment. Its distance S (in ft) above the ground is given by S= 2100 t - 19.2 t ^2 , where t is the time (in S) . Find the acceleration of the bullet. ________ feet per second squared. (type integer or a decimal.)

PLEASE NOTE THAT I SAW THAT YOU HAVE SAME QUESTIONS IN YOUR DATABASE ALREADY, THAT MEANS YOU HAVE THE ANSWERS READY!. PLEASE, I NEED TO SUBMIT IN ONE HOUR, IT IS VERY URGENT. THANK YOU SO MUCH. IS THERE ANY WAY TO CALL YOU OR SPEAK TO SOMEONE? WHEN SHOULD I EXPECT THE CALCULATIONS, I AM REQUIRED TO SHOW MY CALCULATIONS - IT IS VERY IMPORTANT Team

The regular pyramidal roof of the Washington Monument is 55 ft. high and has a base which is a square 35 ft. 2 in. on a side. The marble slabs of which it is built weigh 165 lb. per cu. ft., if the room covered by the roof is a pyramid whose square base is 34 ft. on a side and 54 ft. high, what is the weight of the roof ?

COMP381 Assignment 5: SAS Deliverables: A PDF le containing properly formatted SAS programs; screenshots of each SAS program in the SAS Studio editor; and screenshots of the input data le contents (where applicable), log, and output windows from the program runs. The late penalty is 10% per day. 1. Use PROC PRINT (without any DATA steps) to create

Overview Given the current economy, where employees are asked to do more with less, job stress is at an all time high. An organization wished to determine what factors in the work environment were causing the most job stress. A six-item survey was administered to sample 202 employees. The survey was measured on the following scale: Scale Code

Consider an F distribution with 22 numerator degrees of freedom and 29 denominator degrees of freedom. Compute P(.98 < F <1.09) . Round your answer to at least three decimal places. Consideran F distributionwith15numeratordegreesoffreedomand17denominatordegreesoffreedom.FindcsuchthatP(F>c)=.1.Roundyouranswertoatleasttwodecimalplaces. .is

Refer to the following table. First Event Second Event A 1 A 2 A 3 Total B 1 4 3 6 13 B 2 2 4 5 11 Total 6 7 11 24 a. DetermineP(A 1 ).(Round your answer to 2 decimal places.) P(A 1 ) b. DetermineP(B 1 |A 1 ).(Round your answer to 2 decimal places.) P(B 1 |A 1 ) c. DetermineP(B 1 andA 2 ).(Round your answer to 2 decimal places.) P(B 1 and A 2 )

1.A brace for a shelf has the shape of a right triangle. Its hypotenuse is 8 inches long and the two legs are equal in length. How long are the legs of the triangle? 2.Use the Pythagorean theorem to find the missing side. c=11, b=4a; find a and b. 3.Consider a right triangle with legs a and b and hypotenuse c. Find the exact length of the missing

The owners of the Westfield Mall wished to study customer shopping habits. From earlier studies, the owners were under the impression that a typical shopper spends 0.75 hour at the mall, with a standard deviation of 0.10 hour. Recently the mall owners added some specialty restaurants designed to keep shoppers in the mall longer. The consulting

ANOVA tests for variance differences true or false

Donovan Enterprises produces electric mixers. Demands for the next four quarters are: 40000, 20000, 30000,and 70000. Each quarters demand must be satisfied in the same quarter. Production cost is estimated to be $30 per mixer. Due to limited number of machines, production is limited at a maximum of 50000 per quarter. Excess production can be

A simulation uses a project model that translates the uncertainties specified at a detailed level into their potential impact on objectives that are expressed at the level of the total project. Project simulations use computer models and estimates of risk, usually expressed as a probability distribution of possible costs or durations at a detailed

It is estimated that 20% of luxury cars manufactured in 2012 were silver. A car dealership typically sells 20 luxury cars per month. What is the probability that 8 of the luxury cars sold per month are silver?

I need step wise calculations for each step of these questions. STAT 3509 Final Exercise has two parts, the Textbook Exercise Questions folder has already sloved, please hlep me to check the solutions, if you find any errors, please fix it. And the Class Exercise folder has 4 questions. STAT 3504 Final exercise has several folder, and these

tast Name First Name "."*"*(lN CAPITAI- LETTtrRS) MAT 485, HOMEW.OIIK 11 (DUE, TH. DEC. 8) PRACTICE PROBLEMS FOII FINAL EXAM Final Exanr witl be held on \\4rednesday, Deceluber 14, ?016, hom 10;tE tq 12:15 in MAXW'ELL AUDITORIU$'I PROBLEI4 1 (15 pts) Daiertrlae the general solution ol the equation (cosr)r' * (sir*)'y={cosf}?, U

Please help!! Due in 10 minutes! Suppose that someone sampled 100 Palm trees of the same species. Note: Most trees would be similar in height, but a few would be a little shorter and a few would be a little taller. They recorded the height for each tree. What shape would you expect the histogram of this data to be?

Need help getting excel spreadsheets for HIMS 650 homework. Does anyone have any of them?

A normal population has a mean of 21 and a standard deviation of 5. a. Compute the z value associated with 24. (Round your answer to 2 decimal places.) Z b. What proportion of the population is between 21 and 24? (Round z-score computation to 2 decimal places and your final answer to 4 decimal places.) Proportion c. What proportion of the

2 Qs - please answer in one paragraph - no plagiarism please 1. If two variables are measured on different scales with different units, e.g., the number of crimes committed and phases of the moon, how is it possible to derive a number, like a correlation coefficient, that expresses the relationship between the two variables? How is this done to

The following data were obtained from a repeated-measures study comparing three treatment conditions. Use a repeated-measures ANOVA with= 0.05to determine whether there are significant mean differences among the three treatments. Treatments Person I II III Person Totals A 3 4 2 P=9 B 0 1 6 P=7 N=18 C 1 5 3 P=9 G=53 D 2 5 6 P=13 X 2 =231 E 0 3 2

Suppose that you want to determine whether there is a difference between the distances traveled by an air-filled football and by a helium-filled football, and that you have managed to recruit 12 punters of varying abilities to participate in the study. a. Describe, in detail, the design of an experiment that does not utilize pairing. b. Next,

For this task, use MS Word to write a response for the following items. Please limit each response to 250 words or less, noting than many questions can be answered in 100 words or less. Name the file in the following format: lastnamefirstinitialEDU8006-8-1.doc (example: smithbEDU8006-8-1.doc). Complete the following: (Note: Items #1 and #12 are

Question 1 of 5 20.0 Points Define probability and explain its three perspectives. Provide an example of each. Question 2 of 5 20.0 Points How is the standard normal distribution used to compute normal probabilities? Question 3 of 5 20.0 Points Explain the importance of sampling from a managerial perspective. Question 4 of 5 20.0 Points Explain

The annual income for a sample of 500 part-time students is normally distributed with a mean income of $30000 and a standard deviation of $3000. The income range that separates the top 25% from the lowest 75% is ?

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Calories Time 472 498 465 456 423 437 508 431 479 454 450 410 504 437 489 436 480 439 444 408 21.4 30.8 37.7 33.5 32.8 39.5 22.8 34.1 33.9 43.8 42.4 43.1 29.2 31.3 28.6 32.9 30.6 35.1 33 43.7

In a randomized comparative experiment on the effect of color on the performance of a cognitive task, researchers randomly divided 66 subjects (26 males and 40 females ranging in age from 17 to 25 years) into three groups. Participants were asked to solve a series of 6 anagrams. One group was presented with the anagrams on a blue screen; one group

A personal computer manufacturer is interested in comparing assembly times for two keyboard assembly processes. Assembly times can vary considerably from worker to worker, and the company decides to eliminate this effect by selecting a random sample of workers and timing each worker on each assembly process. Half of the workers are chosen at

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1. Suppose you were going to conduct a survey of visitors to your campus. You want the survey to be as representative as possible. a. How would you select the people to survey? b. Why would that be your best method?

Instuctor's Annotated Edition TENTH EDITION Understandable Statistics Concepts and Methods Charles Henry Brase Regis University Corrinne Pellillo Brase Arapahoe Community College Australia Brazil Japan Korea Mexico Singapore Spain United Kingdom United States Copyright 2010 Cengage Learning. All Rights Reserved. May not be copied, scanned, or

You are 41 years old and hope to retire when you are 65. You have 24 years to retirement. 1. Based on how you want to live in retirement and any other sources of retirement income you have available, how much money do you think you will need to draw from this savings account each year during retirement? 2. You are about to set up a new retirement

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A company that operates a production line that fills 16 ounce boxes of pasta shells uses a quality assurance process that involves randomly selecting and weighing four boxes every hour. The sample data collected during a particular eight-hour shift is as follows: Box No. Hour No. 1 2 3 4 1 15.97 16.00 16.01 16.02 2 16.13 16.12 16.15 16.12 3 15.98

Week Six Topic: Reduction of Order Give a convincing demonstration that the second-order equation (0.1) ay + by + cy = 0 where a, b and c are constants, always possesses at least one solution of the form y1 = em1x , m1 a constant. Also, explain why the differential equation in (0.1) must then have a second solution either of the form y2 = em2x or

The menages problem poses the following question. Some consider it to be desirable that menand women alternate when seated at a circular table. If n couples are seated randomly according tothis rule, show that the probability that nobody sits next to his or her partner is1n!Xnk=0(1)k 2n2n k 2n k k!(n k)!You may find it useful to show first that

find a polynomial equation with real coefficients that has the roots -3 and 4i.

WEEK 1 2 3 4 5 6 SALES PERSONS B 2205 1507 2352 1939 2052 1630 A 1774 1808 1890 1932 1855 1726 A Mean 1830.8333333 Standard Error 31.123856516 Median 1831.5 Mode #N/A Standard Deviation 76.237567292 Sample Variance 5812.1666667 Kurtosis -1.0938495387 Skewness -0.0615771411 Range 206 Minimum 1726 Maximum 1932 Sum 10985 Count 6 B Mean 1947.5

A study of long-distance phone calls made from General Electric Corporate Headquarters in Fairfield, Connecticut, revealed the length of the calls, in minutes, follows the normal probability distribution. The mean length of time per call was 4.60 minutes and the standard deviation was 0.50 minutes. a. What fraction of the calls last between 4.60

Portfolio return. A portfolios value increases by 18% during a financial boom and by 9% during normal times. It decreases by 12% during a recession. What is the expected return on this portfolio if each scenario is equally likely?

i have 3 homework questions i need answers to !; A company is selecting 4 people to be on a committee. There are 22 employees eligible to be on the committee. What is the total number of ways the committee may be formed if the employees are selected at random? A company is selecting 6 people to be on a committee. There are 24 employees eligible to

A mass of gas is compressed in a quasi-static process from 80 kPa, 0.1 m3to 0.4 MPa, 0.03 m 3 . Assuming that the pressure and volume are related by pv n = constant, find the work done by the gas system.

You are planning a sample survey that involves selecting11of the 100 counties in North Carolina. Your sample will be a stratified sample consisting of the6most populous counties in the state and5counties randomly selected from the remaining 94 counties. Obtain your stratified sample from the US Census Bureau North Carolina county populations

16-8 The following table shows orders to be processed at a machine shop as of 8:00 a.m. Monday. The jobs have different operations they must go through. Processing times are in days. Jobs are listed in order of arrival. Job A B C D E Processing Time (Days) 8 10 5 11 9 Due Date (Days) 20 18 25 17 35 Remaining Number of Operations 2 4 5 3 4 a

Assume the annual mean return on ABC stock is around 15% and the annual standard deviationis around 25%. Assume the annual and daily returns on ABC stock are normally distributed. a.[5 pts] What is the probability that ABC will lose money during a year? b.[5 pts] There is a 5% chance that ABC will earn a return of at least what value during a

An auditor for American Health Insurance reports that 20% of policyholders submit a claim during the year. 15 policyholders are selected randomly. What is the probability that at least 3 of them submitted a claim the previous year? .708 .200 .602 .250

Use a level of 5% unless otherwise stated. If the sample size is less than n=30, use a "t" distribution instead of "Z." Do not compute p-value for "t"distribution problems. Just compare the test value of "t" with the critical value corresponding to the given level. 9.5.74 Introductory Statistics 74. A particular brand of tires claims that its

How Do I manually solve the following question? I don't need answers, just some advice, formulas, or something to put me on the right path. Thank you " A recent survey indicates 40% of the students at a local community college are working while attending school. A random sample of 100 students is selected. (round standard deviation to 2 decimals)

Provide a statement and ONE question about the following: The width of the confidence interval expands more when the confidence level increases. In addition, the sample size and the variability also i Provide a statement and ONE question about the following: The width of the confidence interval expands more when the confidence level increases. In

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The mean incubation time for a type of fertilized egg kept at 100.2F in 19 days. Suppose that the incubation times are approximately normally distributed with a standard deviation of 2 days. (a) What is the probability that a randomly selected fertilized egg hatches in less than 17 days? (b) What is the probability that a randomly selected

home/study/math/statistics and probability/questions and answers/ dans vending has the contract to supply sandwiches ... Your question has been answered! Rate it below. Let us know if you got a helpful answer. Question : Dans Vending has the contract to supply sandwic... Save Dans Vending has the contract to supply sandwiches at all home football

True or False In a linear programming problem, the objective function and the constraints must be linear functions of the decision variables. The amount by which an objective function coefficient can change before a different set of values for the decision variables becomes optimal is the a. optimal solution. b. dual solution. c. range of

1. For a fixed confidence level, when the sample size decreases, the length of the confidence interval for a population mean decreases. a. True b. False 2. The z score corresponding to a 95 percent confidence level is 2.10. a. True b. False 3. The larger the level of confidence, the shorter the confidence interval. a. True b. False 4. A 90%

A civil service exam yields scores with a mean of 81 and a standard deviation of 5.5. Using Chebyshev`s Theorem what can we say about the percentage of scores that are above 92? Select one: A. At most 12.5% of the scores are above 92 B. At most 25% of the scores are above 92 C. At least 75% of the scores are above 92 D. At least 25% of the scores

The annual commissions earned by sales representatives of Machine Products, Inc. a manufacturer of light machinery, follow the normal probability distribution. The mean yearly amount earned is $40,000 and the standard deviation is $5,000. a) What fraction of the sales reps earn more than $45,000 per year? b) What fraction of the sales reps earn

Demographic data are collected for every study. Discuss the purpose of describing the demographic data?

It is projected that one of the fastest-growing occupations between 2005 and 2015 will be home health aides. During this 10-year period, the number of home health aides can be approximated by the equation y=4 left (9x+100),where x is the number of years since 2005 and y is the number of employees in thousands. (a)Write the equation in

Using the sign test, if (1) H 1 is directional, (2) H 0 is false, (3) a = 0.01, and (4) N = 12, then the probability of making a Type I error equals ____. 0.0192 0.0010 0 0.0002

10. What is the maximum value of the product P = xy when given the equation y = 2 5x?

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1. In a multiple regression equation, two independent variables are considered, and the sample size is 30. The regression coefficients and the standard errors are as follows. b1 = 1.598 Sb1 = 0.85 b2 = -1.259 Sb2 = 0.6 Conduct a test of hypothesis to determine whether either independent variable has a coefficient equal to zero. Would you consider

A fair coin is flipped 12 times. Find the probability that more than 3 of the flips turn up tails.

Math 130 - 116 Final Exam A Name___________________________ Instructor________________________ Please show all work and round answers to 3 decimal places unless otherwise requested. Each answer is worth 3 percentage points unless otherwise indicated. 1. 2. True or False (2 points each) a. In an observational study, subjects are assigned to

What do you think of the following proof by Lewis Carroll that an urn cannot contain two balls of the same colour? Suppose that the urn contains two balls, each of which is either black or white; thus, in the obvious notation, P(BB) = P(BW) = P(WB) = P(WW) = 1 4 . We add a black ball, so that P(BBB) = P(BBW) = P(BWB) = P(BWW) = 1 4 . Next we pick

Find the domain of the following function. f(x) = sqrt{79/x^2-4x-21} The domain of f(x) is ______________. (Type your answer in interval notation.)

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12. A study conducted by the Center for Population Economics at the University of Chicago studied thebirth weights of babies born the state of New York. The mean weight was 3234 grams with a standarddeviation of 871 grams. Assume that the birth weight data are approximately normal. Use the 68 95 99.7 rule to answer the following:a. What proportion

STAT 200 QUIZ 3 Extended Due Date: Wednesday, July 6, 2016 NAME: _______________________________ I have completed this assignment myself, working independently and not consulting anyone except the instructor. INSTRUCTIONS There are three problems in this quiz. Each problem is worth about 33 points, comprising a total of 100 points for the quiz,

A Pew Poll in November 2011 showed that 1241 out of 2001 randomly polled people favor the death penalty for those convicted of murder. a) Test the hypothesis that more than half of people favor the death penalty using a significance level of .05 b)If there were a vote by the public about whether to ban the death penalty, would it pass? For my null

For a problem, consider that sample size and confidence level are constant and sample proportion (>0.5) increases. Identify if the width of the resulting confidence interval increases or decreases. Increases Decreases For a problem, consider that the bound on the error of estimate (B) and estimate of sample proportion are constant and confidence

A handy man knows from experience that his 29-foot ladder rests in its most stable position when the distance of its base from a wall is 1 foot farther than the height it reaches up the wall. 1.Write an equation that you can use to find the unknown lengths in this situation 2. How far up a wall does this ladder reach? Show your work. 3. How far

A rope, attached to a weight, goes up through a pulley at the ceiling and back down to a worker. Themanholdsthe rope at the same height as the connection point between rope and weight.Suppose the man stands directly next to the weight (i.e., a total rope length of 60 ft) and begins to walkawayata rate of 2ft/s. How fast is the weight rising when

The null and alternative hypotheses are given. Determine whether the hypothesis test is lefttailed, right-tailed, or two-tailed and the parameter that is being tested. H 0 : = 9.4 H1 : < 9.4 x a) Left-tailed, b) c) d) Two-tailed, Right-tailed, x Two-tailed, e) None of these If we reject a false null hypothesis we have a) Made a correct decision.

1. The demand for a product is Normally distributed with mean 350 and standard deviation 30. What is the probability that demand is between 315 and 375, that is P(315 2250)? Choose the best possible answer (just ONE answer). 0.9522 None of the above or below less than 0.5 0.0007 0.0478 1. QUESTION 5 The demand for a product is Normally distributed

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1. The Samsung company carries a variety of electronic inventory items. For the LED TV the daily demand is normally distributed with a mean of 125 units, standard deviation of 30 and lead time is 16 days. Samsung wants to maintain 95% service level. What is the reorder point and how much safety stock should be carried? 2.Four warehouse are

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Problem 4.12 Given the proposition: x IR, a real number y such that x + y = 0. a. Rewrite this proposition in English without the use of the quantifiers. b. Find the negation of the given proposition. Problem 4.13 Given the proposition: x IR, y IR, x + y = 0. a. Rewrite this proposition in English without the use of the quantifiers. b. Find the

How many males are expected to answer "No" under the null hypothesis? Express your answer rounded to two digits after the decimal point. A survey of UF students asked them if signing the Honor Pledge on an exam would make them less likely to cheat or not. The results appear below: Less likely to cheat? Yes No Male 12 28 Female 46 62 How many males

We continue our analysis from previous problem set, this time examing the relationship between social class (CLASS) and spending on welfare (NATFARE). Social Class Spending on Welfare Lower Class Working Class Middle Class Upper Class Total Too little 23 92 76 8 199 About right 12 113 133 10 268 Too much 12 127 99 7 245 Total 47 332 308 25 712

Unit 2 Systems and equations 1. Explain what the solution to a system of equations is and give examples of one solution, no solution, and infinite solutions. (include the equations and the graph and an explanation of why it is one, none, or infinite) Classify these as consistent, inconsistent, dependent, or independent. 2. Show an example of how

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i want manual solution for this book NUMERICAL_MATHEMATICS_AND_COMPUTING_Cheney_Kincaid

Need help for a 1 hour quiz. 8 questions in total. has to be done in 1 hour and one sitting. Will tip more if get the answers correct.

Take Test: Week Four Final Exam COH606 Epidemiology A psychologist has developed a test for school children that is supposed to identify who will commit violent crimes during adolescence and young adulthood. In one school 10 percent of the 200 children tested show a positive result, indicating criminal potential. Half of these children do indeed

Explain in your own words how to determine class midpoints. Give an example.

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