1) Solve the tollo wing sysle ms of eguations: a) 2X- y X + 3y= 3 b) x - 2y+ 2 = -3 3x +y-l = -2 =-1 -| = -2 12) Find two numbers whose sum is 14 and whose difference is t.
Q: Question 2: (i) Describe how stratified random sampling is performed and explain how it differs…
A: Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: Consider a sample with data values of 10, 20, 12, 17, and 16. Compute the z-score for each of the…
A: Given numbers are 10, 20, 12, 17, 16 First we will calculate mean of these 5 numbers
Q: Below is a generic graph that epitomizes one of the three basic natural (or quasi) experiment…
A: The answer is- Regression discontinuity design (RDD)
Q: Define the Ordinary Least Squares Estimator OLS Estimates of the Relationship Between Test Scores…
A: Ordinary least squares (OLS) method is a type of linear least square method which is used for…
Q: for x+1 .If flx) = x-1 show that flx) is continuous at x = 1. 2 for x = 1,
A:
Q: Question 8 D A researcher's hypothesis is that the average length of salmon returning to spawn from…
A: Given: Population meanμ=24Sample size(n)=45Sample standard deviation(s)=3.1
Q: Car and Taxi Ages When the author visited Dublin, Ireland (home of Guinness Brewery employee William…
A: Given: Car Taxi 4 8 0 8 8 0 11 3 14 8 3 4 4 3 4 3 3 6 5 11 8 7 3 7 3 6…
Q: For this data item, tell me whether it is continuous or discrete. The count of the number of…
A: A discrete data are those variable which can assume only a finite, or countably infinite, number of…
Q: 5. The null hypothesis to test for heteroskedasticity is HO: homoskedasticity True False
A: The Null Hypothesis to test for heteroskedasticity is H0: homoskedasticity
Q: A certain brand of tea bags comes in packages of 5, 10, and 20 sachets, costing $5, $9, and $15 per…
A:
Q: Since the score for the talest man is and the z score for the shortest man is (Round to two decimal…
A:
Q: I request to you both subparts solve.both questions are from single questions so I request to both…
A: The monopolist is a single seller who sells a heterogeneous product in the market. A monopolist is a…
Q: State the property of an estimator that gives a correct estimate of the population parameter of…
A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: what is an example of a purchases requisition sample? give a sample of purchases reuqisito
A: A purchase requisition is a record that a representative inside your association makes to demand…
Q: 2. Show that strong monotonicity implies local nonsatiation but not vice versa.
A: The following two steps will show that strong monotonicity implies local non-satiation but not vice…
Q: Find f'(x). f(x) = - 12 In x + 11x - 11
A: The function will be differentiated with respect to x.
Q: Costs LRAC LRMC From the figure above we can infer that over the output range shown production shows…
A: The long-run average cost curve shows the average cost of production of each unit in the long-run.…
Q: What is the lowest level of measurement for the data where the mode could be determined? A. Nominal…
A: 1) Nominal is the lowest level of measurement which is used for determination of mode. It means that…
Q: the complete answer graphical, algebraically, numerically.
A: Average total cost (ATC) equals total cost divided by output. Average fixed cost (AFC) represents…
Q: (age), number of room in a house (room), and the natural logarithm of the distance from a house to…
A: A2. The correct answer is option a. A one percent increase in distance decreases the housing price…
Q: QDX= -2PX + 0,5PY - 0,2PZ + 1,2I determine the relationship between two products X and Y
A: Given; Demand Function; QDX=-2PX+0.5PY-0.2PZ+12I where:- PX=Price of good XPY=Price of good…
Q: Jack is a discus thrower and hopes to make it to the Olympics some day. He has researched the…
A: A line of best fit is a straight line that is the best estimate of the given arrangement of…
Q: Suppose you have the following joint distribution of getting an A or B in both A in British…
A: Suppose you have the following joint distribution of getting an A or B in both econometrics and…
Q: A study of the effect of television commercials on 12-year-old children measured their attention…
A: Cloth Food Toys 25 24 48 30 40 24 22 36 35 42 51 61 22 55 35 33 15 42 23 32 64 27 34…
Q: a) How do you test for normality of error terms in the PRF using Jarque Bera test? What happens to…
A: The linear regression function is the study of relationship between one variable called dependent…
Q: 6. Assume we draw a random sample (ri, yi) :i = 1,.., N from a certain population and estimate the…
A: Regression analysis is estimation of dependent variable by using some explanatory variables. Here y…
Q: You may need to use the appropriate technology to answer this question. Consider the data. X1 2 69|…
A: Given data, Xi 2 6 9 12 20 Yi 5 19 11 26 22
Q: What is the size of the error term for the observation indicated by the arrow in the graph below? Y…
A: The size of the error term basically measures the difference in the actual value of the dependent…
Q: Let ŷ represent the profit (or loss) for a certain company a years after 1965. Based on the data…
A: Y represents the profit (or loss) for a certain company X years after 1965. Based on the given data,…
Q: Consider the following two sample data sets. Set 1: 9763 2 Set 2: 5 10 1397 a. Calculate the…
A: Coefficient of Variation is a measure of dispersion which is the ratio of standard deviation to the…
Q: A researcher has designed the relationship between the salaries of selected employees of an…
A: Regression Analysis is the study of relationship between one variable called dependent variable and…
Q: Sir Francis Galton, a cousin of James Darwin, examined the relationship between the height of…
A: Estimated regression we have Studenth(hat) = 19.6 + 0.73 × Midparh
Q: e (in feet) traveled by a baseball, in degrees) the baseball was hit, or. ent Variable: DISTANCE…
A: *Answer:
Q: A company has determined that there are seven possible defects for one of its product lines.…
A: A pareto chart describes a bar chart which has both bars and a line showing values of a data in the…
Q: 6- A chi-square test of the relationship between personal perception of emotional health and martial…
A:
Q: 24- Refer to the following output, what does it refer to?* Breusch-Godfrey Serial Correlation LM…
A: Heteroscedasticity in statistic regression that variability of random disturbance is not same across…
Q: 18. Suppose I am estimating the test scores of a group of students using OLS. I see that there is a…
A: In Economics, normal methodology OLS method is widely used to estimate the parameter of a…
Q: The difference equation given by A2yt+1 can be written as
A: We will use two formulas to solve this: 1) ∆2yt = ∆(∆yt)2) ∆yt+n = yt+n+1 - yt+n
Q: Consider the following hypothetical pooled cross-sectional data of daily COVID-19 cases per 1,000…
A: Given: Cases reported when there is no lockdown State March (cases per 1000) April (cases per…
Q: Thomas Eisensee and David Stromberg wanted to measure how much news coverage of a foreign disaster…
A: The basis of any economic or econometric model is to design an accurate predictor of real-life…
Q: Question: It is known that the mean diameters of rivets produced by two firms A and B are…
A:
Q: A disadvantage of a convenience sample is that: a. This way of sampling is relatively expensive. o.…
A: The type of sampling being used often by researchers being inexperienced, or by those who prefer…
Q: 5- zero correlation does not necessarily imply independence between the two variables. This…
A: Zero correlation means there is no static relationship between the two variables. It is very…
Q: Heteroskedasticity Test: White Null hypothesis: Homoskedasticity F-statistic 8.030204 Prob. F(3,6)…
A: Homoscedasticity is the main assumption in the OLS regression analysis, as it is important for OLS…
Q: In June 2015, Gallup conducted a poll of a random sample of 14802 adults to determine the well-being…
A: A parameter is a measurement that summarizes a population. A statistic is a measurement that…
please answer the questions on the image attached with work shown, thanks!
Step by step
Solved in 4 steps with 4 images
- PLEASE DE NOT COPY FROM PREVIOUS ANSWERS .......Your friend - an artist - has asked you to help her determine how many paintings sized 50x150cm she should paint for sale. She's deciding between one, two, three, or four paintings. Your friend sells the paintings for 300 monetary units each. She spends 8 hours on each painting (1 hour of work = 15 monetary units). Additionally, each painting incurs an extra cost of 40 monetary units (for canvas, backing, paints, brushes, sprays). Based on past data, you estimate that with a probability of 0.2, there will be no potential buyers; with a probability of 0.2, there will be one potential buyer; with a probability of 0.2, there will be two potential buyers; with a probability of 0.3, there will be three potential buyers; with a probability of 0.1, there will be four potential buyers. Assume that if there are fewer paintings produced than potential buyers, some (randomly selected) potential buyers will remain without a painting; otherwise, all potential buyers will purchase exactly one…QDX= -2PX + 0,5PY - 0,2PZ + 1,2I determine the relationship between two products X and Y
- Plz solve correctlyIn a study aimed at creating reference values, abdominal circumference (measured in cm) was measured in adult men. It was found that the relationship to age could be described as abdominal circumference = 82 + 0.3 x age a) What is the analysis that produces such a formula called? b) At what age is the average abdominal circumference 100 cm?solve with table method
