C.W. Churchman once said that "Mathematics...tends tolull the unsuspecting that he who thinks elaboratelythinks well." Do you think that the best QA Models arethe ones that are most elaborate and complexMathematically? Why?

No. Normally the best models of quantitative analysis are not mathematically complex. The reason is…

Answered: C.W. Churchman once said that…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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When is it appropriate to use surveys? - This question is based on Research Methodology A. When we want to find information about highly complex issues.B. All options are correctC. When we want information from larger populations.D. When we want a lot of detailed information.
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A. Construct a mathematical model for the following real-life situations1. You have a summer job that pays P250 for 8 hours of work a day. Beyond 8 hours, you are alsopaid 1.5 time your hourly rate.2. An internet café has a flat rate of P15 for the first hour of playing, surfing, and the like. Anadditional P5 is charged for every hour in excess afterwards.3. You and your classmates want to earn extra income this quarantine time. To do this, you will sellonline a disposable facemask. The wholesaler has the following conditions: if you purchase 100boxes of disposable facemask, each costs P120; if you purchase between 100 and 300 boxes,the price per box is lowered to P110; if you get more than 300 boxes, the price per box islowered by P15.
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Research has shown that losing even one night's sleep can have a significant effect on performance of complex tasks, such as problem solving (Linde & Begrstroem, 1992). To demonstrate this phenomenon, one sample of n=25 college students was given a problem-solving task at noon on one day and again at noon on the following day. The students were not permitted any sleep between the two tests. For each student, the difference between the first and second scores was recorded. For this sample, the students averaged MD=4.7 points better on the first test with a variance of s^2=64 for the different scores. 1. State the hypotheses both experimental and statistical. 2. Do the data indicate a significant decline in problem-solving ability? Use a one-tailed test with a=.01. Please show work and state your decision regarding the H0. 3. Compute a 90% Confidence Interval (upper and lower values). 4. State your conclusion in APA format.
(c) Compute EVPI and EVSI (in thousands of dollars). (Round your answers to one decimal place.) EVPI $ 3.6 EVSI $ 3.6 Xthousand x thousand Discuss whether the firm should consider a consulting expert who could provide independent forecasts of market conditions for the product. Compared to the EVPI, the EVSI has a low value. This indicates additional information is probably worthwhile
Exploration 2: Info Gap: Music Devices Directions: Problem #2 is provided below. Think about the specific information that is needed to solve the problem. Type the information in the table. The store starts selling another music device. Jada is interested in Device D, though she does not have enough money to buy it. How much does Device D cost? What specific information is needeto solve this problem?
(a) Write a function of the form P (t) = Poet to model each population P (t) (in millions) / years after January 1, 2000. Round the value of k to five kt decimal places. Country Congo Turkey Population in 2000 (millions) 50 67.4 Population in 2010 (millions) 66 73.7 P (t) = Pekt P(1) = I 0 P (t) = e X S
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12. The management of a hockey arena plans to increase ticket prices to obtain more revenue. A survey was conducted to estimate the revenue generated for different ticket prices. These data were obtained. Ticket price ($) 10 15 20 25 Projected revenue ($) 16 000 19 500 20 300 14 750 a) Why might a quadratic model be a good fit for the data? b) Perform a quadratic regression on the data. c) Determine the maximum value of the regression equation. What does it represent? d) Predict the revenue that would be obtained if the tickets cost $30.

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C.W. Churchman once said that "Mathematics...tends to lull the unsuspecting that he who thinks elaborately thinks well." Do you think that the best QA Models are the ones that are most elaborate and complex Mathematically? Why?