STATE OF NATURE FAVORABLE UNFAVORABLE ERNATIVE MARKET ($) MARKET ($) struct a large plant 785,800 -725,800 struct a small plant 649,900 -359,900 nothing 774,800 -564,800 perfect information pability 0.26 0.74
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- Carl is conducting a research study and finds a significant positive correlation between a state's per capita consumption of mozzarella cheese and the number of doctoral degrees in civil engineering that are awarded (real example!). However, this association is actually caused by a third variable that Carl did not measure. The relationship between cheese consumption and engineering degrees is an example of a(n): Group of answer choices spurious relationship clinically significant relationship univariate relationship negative correlationate.edu/portal/site/f37b0c28-85a3-43ae-a924-af41e3081543/tool/fc0d7e39-8282-4530-8f9a-bd537563ef5f/jsf/delivery/deliverAssessment TESTS & QUIZZES % Link ? Help TIme Remaining: 00:16:31 A Hide Time Remaining A Part 4 of 4 Question 6 of 7 1.5 Points A math class has 70 students enrolled. A survey of those students indicated that 22 had taken a calculus class before and 29 had taken a statistics class before. Further, 10 had taken both calculus and statistics before. The number of students who had taken neither calculus nor statistics before is Previous Next Save 11:58 图 1/19/ Mort sc delete home end is 144 num backspace 8. 6. lock 5six hundred adult americans were asked by telephone poll, "what do you think constitutes a middle-class income?" Include left endpoint, but not right endpoint. salary: R. Freq. < 20000 0.02 20000-25000 0.09 25000-30000 0.19 30000-40000 0.26 40000-50000 0.18 50000-75000 0.17 75000-99999 0.02 100000+ 0.01 A. what percentage if the survey answered not sure B. What percentage think that middle-class is from $25,000 to…
- The following equations were estimated using the data in ECONMATH, with standard errors reported under coefficients. The average class score, measured as a percentage, is about 72.2; exactly 50% of the students are male; and the average of colgpa (grade point average at the start of the term) is about 2.81. score = 32.31 + 14.32 colgpa (2.00) (0.70) n = 856, R² = .329, R = .328. 29.66 + 3.83 male + 14.57 colgpa score = (2.04) (0.74) (0.69) n = 856, R? = .349, R = .348.Suppose we have a panel data of of 100 firms over 20 years at a monthly frequency. We are interested in how firms’ bond ratings affect their investment. Give an example of an omitted variable that can be fixed by Fixed Effects or First Differences. Give another example of an omitted variable that cannot be fixed by Fixed Effects or First DifferencesOn an assembly line, there are 3 "checkpoints" at which a widget is inspected for defects. Upon review of prior data, the following is noted: The test for product integrity finds a problem 26% of the time The test for product specifications finds a problem 19% of the time The test for packaging consistency finds a problem 38% of the time (It's not a particularly good assembly line!) Assume for purposes of this problem, that all of the tests / checkpoint problems are independent of each other. What is the probability that an error will be found by all of the tests? What is the probability that an error will be found by any one of the tests? That is, a problem on the first, or second, or third test? What is the probability that a problem will be found for the "packaging consistency" only? What is the probability of finding an error of at least one of the tests? Hint: You can use your complement rule here.
- Describe the pattern that you see. How strong is the pattern? The scatterplot exhibits a ---Select--- (weak linear, weak nonlinear, strong nonlinear, strong linear) pattern. Do you see any outliers or clusters? There ---Select--- (are no outliers, is one outlier, are two outliers, are more than two outliers) and ---Select--- (no clusters, one cluster, two clusters, more than two clusters) on the scatterplot.Describe the pattern that you see. How strong is the pattern?The scatterplot exhibits a ---Select--- (weak linear, weak nonlinear, strong nonlinear, strong linear) pattern. Do you see any outliers or clusters?There ---Select--- (are no outliers, is one outlier, are two outliers, are more than two outliers) and ---Select--- (no clusters, one cluster, two clusters, more than two clusters) on the scatterplot.Match the description of the activity in the answer bank to the day component where it occurs.
- C Clever | Portal E Edulastic E Edulastic A Des A app.edulastic.com/student/assessment/5fea0d5377caad0008a90d93/class/5f49b6ee5dd16ded1 O scholar.democracyprep.org bookmarks E· Question 6/26 > NE, A BOOKMARK of When you buy technology like cellphones and computers, the value of the object tends to decrease as newer products with more features become available. 6 If you bought a cell phone for $350 and it lost 25% of its value every year, which of the following functions could be used to describe the value, V, of the cellphone after t years? Select all that apply. AV (t) = 350 (1 – 0.25)* BV(t) = 350(75)* CV(t) = 350(0.75) DV (t) = 350 (0.25) EV (t) = 350 (1+0.25)* -> esc #3 %24 % 4. 5 21 3.com/static/nb/ui/evo/index.html?deploymentld%3D57211919418147002668187168&elSBN=9781337114264&id%3D900392331&snapshotld%3D19233498 GE MINDTAP Q Search this course -ST 260 Save Submit Assignment for Grading ons Exercise 08.46 Algorithmic « Question 10 of 10 Check My Work (4 remaining) eBook The 92 million Americans of age 50 and over control 50 percent of all discretionary income. AARP estimates that the average annual expenditure on restaurants and carryout food was $1,876 for individuals in this age group. Suppose this estimate is based on a sample of 80 persons and that the sample standard deviation is $550. Round your answers to the nearest whole numbers. a. At 99% confidence, what is the margin of error? b. What is the 99% confidence interval for the population mean amount spent on restaurants and carryout food? C. What is your estimate of the total amount spent by Americans of age 50 and over on restaurants and carryout food? million d. If the amount spent on restaurants and…er | Portal E Edulastic E Edulastic JA Desmos | Graphing Calculator A app.edulastic.com/student/assessment/5fea0d5377caad0008a90d93/class/5f49b6ee5dd16ded178fe233/uta/6050e94e2fc5 plar.democracyprep.org bookmarks Question 21/26 > NEXT A BOOKMARK 21 Alpha is reading his novel for Literature class. After reading for 12 minutes, he has 51 pages left to read. After reading for 48 minutes, he has 24 pages left to read. If Alpha is reading at a constant rate, write a function p (m) to describe the number of pages, p, he has left to read after reading for m minutes. Show your work and write your answer in the space below. Click the box below to type your math work and answer. On the right side of the box, click the button to start a new line. -> esc %23 24 8. 4. W e r 35