In the following profit payoff table for a decisproblem with two states of nature and threealternatives, the prior probabilities for s1 andP(81) = .8 and P(82) = .2.Excel File: data20-15.xlsState of NatureDecision Alternative$2d,dzdz1510122010a. What is the optimal decision?- Select your answer -b. Find the EVPI.c. Suppose that sample information I is obtawith P(I|81) = .20 and P(I|82) = .75.Find the posterior probabilities P(81|1) and P(s;decimals).P(81|I) =P(82\I) =

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Answered: In the following profit payoff table…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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If a = 1, b 1 = 10, b 2 = 10, X 1 = 2, and X 2 = 3, what would the predicted Y score be?
Suppose that in solving a TSP you use the nearest-neighboralgorithm and find a nearest-neighbor tour with a total costof $13,500. Suppose that you later find out that the cost ofan optimal tour is $12,000. What was the relative error ofyour nearest-neighbor tour? Express your answer as a percentage,rounded to the nearest tenth of a percent.
Will improving customer service result in higher stock prices for the companies providing the better services? "when a company's satisfaction score has improved over the prior years results and is above the national average (currently 75.7), studies show its shares have a good chance of outperforming the broad stock market in the long run." The following satisfaction scores of three companies for the 4th quarters of two previous years were obtained from the American Customer satisfaction index. Assume that the scores are based on a poll of 55 customers from each company. Because the polling has been done for several years, the standard deviation can be assumed to equal 7 points in each case. Company year 1 score year 2 score Rite Aid 72 75 Expedia 78 79 J.C Penney 75 77 a. For Rite Aid is the increase in the satisfaction score from year 1 to year 2 statistically significant? use ax=.05 and null…
i.20% of the response times are longer than how many minutes? iI.Find the IQR of the response times. Suppose that another “major city” claimed that its police force response times followed a normal model with a mean of 8 minutes. What is the SD of this model if 95% of the response times were at most 12 minutes? Show all steps in your solution.
Q1. A psychologist conducted a study on the relationship between introversion and shyness. The values are results for scales of introversion and shyness. High positive scores on each scale indicate high introversion or shyness; and high negative scores indicate low introversion or shyness. Data collected from 10 people as follows: Introversion 4 -7 -1 0 6 7 -4 -9 -5 8 Shyness 11 -7 -1 -3 0 7 -1 -8 -1 5 a) Compute the correlation coefficient relating introversion and shyness scores. b) Find the regression equation which predicts introversion from shyness. c) What introversion score would you predict from a shyness score of 7?
Will improving customer service result in higher stock prices for the companies providing the better service? "When a company's satisfaction score has improved over the prior year's results and is above the national average (currently 75.7), studies show its shares have a good chance of outperforming the broad stock market in the long run." The following satisfaction scores of three companies for the 4th quarters of two previous years were obtained from the American Customer Satisfaction Index. Assume that the scores are based on a poll of 67 customers from each company. Because the polling has been done for several years, the standard deviation can be assumed to equal 6 points in each case. Company Year 1 Score Year 2 Score Rite Aid 73 75 Expedia 72 75 J.C. Penney 73 74 a. For Rite Aid, is the increase in the satisfaction score from year 1 to year 2 statistically significant? Use a = .05 and null hypothesis is Ho : H1 – 42 <0. What can you conclude? z value (to 2 decimals) p-value (to…
The following payoff table shows the profit for a decision problem with two states of nature anwo decision alternatives. Decision Alternative d₁ d₂ 052 Submit Answer - [-/6 Points] State of Nature $1 11 5 (a) Suppose P(s) = 0.2 and P(s₂) = 0.8. What is the best decision using the expected value approach? The best decision is --?--✓ with an expected value of DETAILS $2 (b) Perform sensitivity analysis on the payoffs for decision alternative d₁. Assume the probabilities are as given in part (a), an solution found in part (a) optimal. 2 As long as the payoff for s, under d, is |--?-- ▼ 1 4 As long as the payoff for s, under d₁ is --?-- v 2 Is the solution more sensitive to the payoff under state of nature s₁ or s₂? O 51 then the solution found in part (a) will be optimal. then the solution found in part (a) will be optimal. CAMMIMS16 14.E.015.
A researcher designed a study to test whether caffeine use enhanced performance time to run a 100 meter sprint. The participants (n=30) ran a 100 meter sprint before the consumption of caffeine on day 1 and then they ran another 100 meter sprint on the following day 2 after ingesting caffeine. The average time taken to run the 100 meter sprint on day 1 was (M1) and the average to run on day 2 after caffeine was (M2). The variance for this study was calculated to be (S2). Does caffeine use improve the running time in the 100 meter sprint (e.g., lower time)? Use all of the data provided to you below and test at an alpha of 0.05. M1 = 26.53M2 = 14.69S2 = 207.75n=30 a) state null and alternate hypothesis b) what is the critical value c) what is the obtained value d) conclusion

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