4.1) Using the substitution method, solve the following simultaneous equation:

Q: any investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good…

A: "Since you have posted a question with multiple subparts, we will solve first 3 sub-parts for you.…

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A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: am. 115.

A: (a) Compute the matrix B - ATo compute the matrix B minus A, we subtract the corresponding entries…

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A: Study Time (X) Exam score (y)  2 30 4 50

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A: In order check whether whether the model is useful in predicting Y, we will run a student's t-test…

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A: Export: The foreign inward is in the form of export; therefore, the government leads to such…

Q: Q. Please draw a graph as indicated in the problem and answer the question  The data presented in…

A: a. graph:b. positive correlationc.  it does pay to advertise   Explanation:a. This diagram shows the…

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A: a.Calculating Bracelets for 2 Workers:The MPL for the 2nd worker is 24.Total bracelets produced by 2…

Q: Problem 3 (25 points) We estimate the relationship between individual SAT score and several…

A: Question 1: Is there strong evidence that hsizesq  should be included in the model? How did you…

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Q: United States U.S. DEPARTMENT OF COMMERCE Census 2000 BUREAU OF THE CENSUS WASHINGTON, DC 24213-2000…

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A: A dummy variable refers to one that takes a binary value to indicate the absence or presence of some…

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A: Mean is the average of the values given.  Mean is calculated as the sum of observation Divided by…

Q: Plot the following system of equations on the following graph. System of Equations: p=6−2qp=6−2q…

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A: Given  T=30+0.5Y so here slope is 0.5 we can draw the graph of the equation which are as follow-

Q: Question Each term (3 months) the current group of economics students completed a questionnaire as…

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Q: 33. Number of Sellers: There are dozens of pasta producers that sell pasta to hundreds of Italian…

A: Since you have asked multiple questions, we will solve first question for you. If you want any…

Q: Refer to the table below: Participation Rates (Age 16 and Older) Year Men Women 1950 86.4 33.9 1960…

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Q: Help!

A: Let's dive into a more detailed explanation for question (c):In cross-sectional regressions, we…

Q: 6) Suppose you have the following data on the price of orange and the quantity sold: (in Price…

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Q: Use matrices to solve the following pairs of simultaneous equations: 3x + 4y = -1 and 5x - y = 6

A: Using a coefficient matrix, a variable matrix, and a constant matrix, a system of linear equations…