3. d-separation: How to determine which variables are independent in a Bayes net?GⒸa) Are A and B conditionally independent, given D and F?(Same as "P(A/BDF) =? P(ADF)" or "P(B/ADF) -? P(B|DF)")b)Are A and B marginally independent? (Same as "P(A/B)-? P(A)" or "P(BIA)-? P(B)")Are A and B conditionally independent, given C?c)d) Are D and E conditionally independent, given C?e) Are D and E marginally independent?f) Are D and E conditionally independent, given A and B?

The objective of the question is to determine the independence of variables in a Bayesian network.…

Answered: 3. d-separation: How to determine which…

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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6.28
The following two-by-two table was created from the data. TROUBLE STAYING ASLEEP [outcome] TROUBLE FALLING ASLEEP[predictor] Yes No TOTAL Yes 65 40 105 No 51 110 161 TOTAL 116 150 266 Let TP denote True Positive cases. Let TN denote True Negative cases. Let FP denote False Positive cases. Let FN denote False Negative cases. Trouble staying asleep (outcome) Yes No Trouble falling asleep (predictor) Yes TP FN No FP TN What is the positive predictive value of the predictor variable for the outcome? What is the negative predictive value of the predictor variable for the outcome? Which predictive value (negative or positive) is higher? What proportion of participants have trouble falling asleep and staying asleep? What is the prevalence of “Trouble staying asleep” among study participants?
A manufactures of LED sets was trying to find out what variables influenced the purcnase of a LED set. Level of income was suggested as possible variable influencing the purchase of LED sets. A sample of 500 households was selected and the information obtained is classified as shown below : Have LED set Do not have LED set Low income group 0. 250 Middle income group 50 100 80 20 High income group Is there evidence from the above data of a relation ownership of LED sets and level of income ?
Example 4.7 Out of 1800 candidates appeared for a competitive examination 625 were successful; 300 had attended a coaching class and of these 180 came out successful. Test for the association of attributes attending the coaching class and success in the examination.
filustration. 21.24. Do you find any inconsistency in the data N-1000, (А3)—483, (AY)— 378, (Вү)— 226 (A) А) 3 525, (B) - 312, (C) - 470, and (ABC) 3 25 - 525, (В) 3D 470, and (АВС) в 25
24
2. Investigate using the Chi square test of independence whether the positive and the negative attitudes toward mathematics of 450 fourth year high school students are independent of the course they wou ld like to pursue in college. Use the following data collected by a researcher. For the level of significance, use O. 05 Courses Attitudes Positive Negatives BSE 32 34 BS Accountancy BS Psychology BS Civil Engineering 45 24 15 26 34 4 BSHRM 44 BS in International 17 26 Relation BSCS 15 24 BS Math 32 BSIT 13 12 BS in Biology 31 27
A fair dice with sides numbered with {1, 2, 3, 4, 5, 6} was rolled three times. Let X denote number of times 6 was rolled in the first two rolls and let Y denote the total number of 6 rolled. Find the covariance of X and Y.
OCPS Dashboard O Tues, Mar 02: Independent Pra X K Sarah Loutfi - Independent Pra X M Verify your email address - srh X b My Questions | bartleby A web.kamihq.com/web/viewer.html?state=%7B"ids"%3A%5B"14npUclxjbYhVGxMylY6MWKGbJBGDS-19"%5D%2C"action"%3A open"%2C"userld"%3A"105426... Q * pps OCPS 9 ni 口 0 Geometry Hon.. Sarah Loutfi - Independent Practice - Student Copy-Le: トくo四 submit - 0, E SI Student Edu 156% Solve for the value of x. Round your answers to the nearest tenth. 5. 6. 7. 20 64° 41° 11 35° Page 1. 9:00 PM 3/4/2021
8. A manufacturer of flash drives for data storage operates a production facility that runs on three 8-hour shifts per day. The following contingency table shows the number of flash drives that were defective and not defective from each shift. Shift Defective | Not Defective 7am - 3pm 7 113 3pm - 11pm | 10 90 11pm - 7am 4 76 Perform a hypothesis test to determine if the quality of the flash drive production and the production shift are independent variables using a = 0.05. Show the computed expected frequencies.
Q7. A survey was conducted in which 100 males and, independently, 100 females were asked about their respective methods of transportation to work. Participants were asked whether they typically drive to work, use public transportation, or walk / bicycle. The results are given in the table below. Can the investigators conclude that males differ from females in their work commute tendencies? Show your work. Drive Public Transportation Walk or Bicycle 22 Females 71 7 Males 76 18 6 (a) Based on the assumption that female and male tendencies are alike, construct a table of expected frequencies. (b) Use a X² test to evaluate the assumption used in part a. Make sure you indicate which test you are using! (c) Interpret the result of part b in terms of the situation of the problem, without using any statistical language.

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