A decision problem is described by the following decision tree (which has already been solved). X1 50 D1 10 18 X2 X1 100 18 D2 12 X2 -10 Determine the value of EMV(perfect) for this decision problem.
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The decision tree is used to make decisions based on the all types of possibility with its corresponding probability. As the name suggest it look like tree that helps to visualize entire experiment to make decision. It is most prominently used in visualizing management report etc.,
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- < Prev A luxury car dealer is considering two possible locations for a new auto mall. The rent on the south side of town is cheaper. However, the dealer believes that the average household income is significantly higher on the north side of town. The dealer has decided that they will locate the new auto mall on the north side of town if the results of a study that they commissioned show that the average household income is significantly higher on the north side of town. The results of the study are as follows. North Side South Side n 14 12 Answer x-bar 59 51 5 6 7 Calculate a 98% confidence interval for the difference (North-South) in average income between the two sides of town. Round your answer to two. decimal places Incorrect Answer 0 out of 10 Points Lower Confidence Limit: 2 Upper Confidence Limit 141 Tables NextProfessor Fair believes that extra time does not improve grades on exams. He randomly divided a group of 300 students into two groups and gave them all the same test. One group had exactly 1 hour in which to finish the test, and the other group could stay as long as desired. The results are shown in the following table. Test at the 0.01 level of significance that time to complete a test and test results are independent. Time A B C F Row Total 1 h 22 41 65 12 140 Unlimited 17 49 86 8 160 Column Total 39 90 151 20 300 (ii) Find the sample test statistic. (Round your answer to two decimal places.)Answer this for me mate. Much appreciated.
- The time to complete a race is a latent or hidden variable for the ordinal variable for 1st, 2nd, and 3rd place. True FalseThe table below shows the marks out of 40 for nine students on two tests. The tests cover similar content but on one test the students are allowed to use a calculator while on the other test calculators are not allowed. Student A B Calculator allowed (x) 8 10 Non-calculator (y) 12 14 (b) C 14 6 Student J scored 25 on the test with calculators allowed, but missed the non-calculator test. Use the marks for students A to I to find the value of the Pearson correlation coefficient between the marks x on the test with calculator allowed and the marks y on the non-calculator test, and the equation of the least squares regression line of y on x. (a) (c) D E F G H I 14 16 22 28 32 36 4 28 16 24 22 18 Use the least squares regression line of y on x to estimate the mark of student J on the non-calculator test. Describe the strength of the correlation between the marks on the two tests and explain how this may affect the accuracy of your estimate.(a) What experimental design would be the best to use in the following situation? Be specific. Explain the good features of your proposed design. A taste panel will convene this afternoon to compare six different brands of ice cream. The panel is comprised of 10 persons who are expert tasters. The maximum number of different brands that an individual taster will taste is 3. (b) What would you do if three of the expert tasters failed to come this afternoon because of illness so that you could not run the design recommended in (a) above?
- Over the span of a month, a school tracks student choices at lunch. They find that 56% of all students buy milk with lunch and 32% buy a piece of fruit. If 22% of all students buy both milk and fruit, which of the following represents the percent of students who buy neither? (1) 28% (3) 42% (2) 34% (4) 46%y of Chapter 2 : Borr x G Identify 4 Goals/Outcomes we st x Presentation Session Student tlhiqsxqk Warm-up • The Math Club is using the prediction equation • y = 1.25x + 10 to estimate the number of members it will have, where x represents the number of years the club has been in existence. About how many members does the club expect to have in its fifth year? PaDeck Students, draw anywhere on this slide! Slide 4/24need answer and all the work
- Plz answer part 9 in 20 mints it's very urgentMatching options: 1. x1y1 + x2y2 + x1y3 + x2y4 + x1y2 + x2y1 + x1y4 + x2y3 2. x1y1 + x2y2 + x1y2 + x2y1 + x1y3 + x2y4 + x1y4 + x2y3 3. x1y1 + x2y1 + x1y2 + x2y2 + x1y3 + x2y3 + x1y4 + x2y4 4. y1x1 + y1x2 + y1x3 + y1x4 + y2x1 + y2x2 + y2x3 + y2x4 5. y1x1 + y2x1 + y1x2 + y2x2 + y1x3 + y2x3 + y1x4 + y2x4 6. x1y1 + x1y2 + x1y3 + x1y4 + x2y1 + x2y2 + x2y3 + x2y4RABCD X₁ 12 20 2 A researcher is interested in seeing if listening to a political debate changes anxiety scores among people. The researcher knows of no previous research that would predict whether anxiety scores would be raised or lowered. The researcher gathers a sample of n = 4, and gives these participants an anxiety test before and after listening to the political debate. Below are the data (anxiety scores) at time one (X₁) and time two (X₂) for all participants. Participant 10 10 X₂ 28 24 26 18 b.) Is this a one or a two-tailed test? a.) State the researcher's null and alternative hypotheses (using symbols OR everyday language): c.) Find the critical value (alpha = .05) d.) Compute the observed test statistic (remember to show your work) 5 e.) Based on the information above, what is your statistical conclusion? f.) Describe briefly what we can conclude in practical terms 6 g.) Based on the results above, calculate a Cohen's d and interpret what this tells us about the difference…
