Y = 1million + 56.43*X + error By how much does the expected value of Y change if X increases by 2 units? (Round your answer to two decimal places: ex: 123.45) Y = 50 + 3X + error By how much does the expected value of Y change if X decreases by 10 units?
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Y = 1million + 56.43*X + error
By how much does the expected value of Y change if X increases by 2 units? (Round your answer to two decimal places: ex: 123.45)
Y = 50 + 3X + error
By how much does the expected value of Y change if X decreases by 10 units?
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- Suppose the relationship between Y and X is given by: Y = 3.1415 + 6X + error By how much does the expected value of Y change if X increases by 7.23 units? (Round your answer to two decimal places: ex: 123.45)Y = 30 - 25X + error What is the expected value of Y when X is 0? Y = 10 + 13.57*X + error By how much does the expected value of Y change if X increases by 18.02 units? (Round your answer to two decimal places: ex: 123.45)A wheel of fortune in a gambling casino has 54 different slots in which the wheel pointer can stop. Four of the 54 slots contain the number 9. For $3 bet on hitting a 9, if he or she succeeds, the gambler wins $16 plus return of the $3 bet. What is the expected value of this gambling game? (Present your answer in dollars with 2 decimal places but without $ sign)
- You are taking two courses this semester, biology and chemistry. You have quizzes coming up in both classes. The table below shows your grade on each quiz for different numbers of hours studying for each quiz. For instance, the second row implies that one hour of studying for Chemistry will generate an expected grade of 73 on Chemistry, whereas one hour of studying for Biology will generate an expected grade of 75 on Biology. Hours of Study Chemistry Biology 0 65 68 1 73 75 2 79 80 3 83 83 Your goal is to maximize your average grade on the two quizzes. Use the idea of optimization in differences to decide how much time you would spend studying for each quiz if you had a total of 1, 2, or 3 hours to prepare for each exam. If you had 1 hour, you should study..... If you had 2 hours, then you should study.... hour(s) for chemistry and..... hour(s) for biology. If you had 3 hours, then you should study ..... hour(s) for chemistry and..... hour(s) for biology.…Quick answer please If you are currently a worker earning $60,000 per year but are considering becoming an entrepreneur. You will not switch unless you earn an accounting profit that is on average at least as great as your current Salary. You look into opening a small grocery store. Suppose that the store has annual cost of $150,000 for labor, $60,000 for rent and $30,000 for equipment. There is one-half probability that revenues will be $20,000 and a half probability that revenue will be $420,000 a. WHat is your accounting and economic profit?People in a certain group have a 0.75% chance of dying this year. If a person in this group buys a life insurance policy for $6000 that pays $1,000,000 to her family if she dies this year and $0 otherwise, what is the expected value of the policy? (enter a minus sign if necessary and round your answer to the nearest dollar). $
- Now, imagine that Port Chester decides to crack down on motorists who park illegally by increasing the number of officers issuing parking tickets (thus, raising the probability of a ticket). If the cost of a ticket is $100, and the opportunity cost for the average driver of searching for parking is $12, which of the following probabilities would make the average person stop parking illegally? Assume that people will not park illegally if the expected value of doing so is negative. Check all that apply.You are a coin trader. You have $1,000,000, and today one coin costs $2000. Tomorrow the coin will either cost $1000 or $4000, each with equal probability. Assume the prices are constant all day and change instantly at midnight. For each of the following, give a strategy and why it’s correct: (a) If you want to maximize the expected amount of money you have tomorrow, what should you do? (b) If you want to maximize the expected number of coins you have tomorrow, what should you do?Suppose Var(X) = 36, Var(Y) = 42, and X and Y are independent. What is Var(.25X + .75Y)? Suppose Var(X) = 63, Var(Y) = 87, and X and Y are independent. What is Var(.79X + .21Y)? Suppose that Var(X) = 907.96, Var(X) = 10219.44, and Cov(X,Y) = 2694.59. What is Var(.33X + .67Y)?
- 1. Now, imagine that Port Chester decides to crack down on motorists who park illegally by increasing the number of officers issuing parking tickets (thus, raising the probability of a ticket). If the cost of a ticket is $100, and the opportunity cost for the average driver of searching for parking is $12, which of the following probabilities would make the average person stop parking illegally? Assume that people will not park illegally if the expected value of doing so is negative. Check all that apply. A. 9% B. 18% C. 17% D. 10% 2. Alternatively, the city could hold the number of officers constant and discourage parking violations by raising the fine for illegal parking. Suppose the average probability of getting caught for parking illegally is currently 10% citywide, and the average opportunity cost of parking is, again, $12. The fine that would make the average person indifferent between searching for parking and parking illegally is ____ , assuming that people will not…The manufacturer of Brand A automobile tires claims that its tire can save 120 gallons of fuel over 54,000 miles of driving, as compared to a popular competitor (Brand B). If gasoline costs $4.00 per gallon, how much per mile driven does this tire save the customer (Brand A versus Brand B)? The savings are $ per mile. (Round to three decimal places.)Suppose your utility function for money is a square-root function of its value in US dollars. So, for instance, $400 is worth 20 utils for you, $961 is worth 31 utils for you, and $62.5K is worth 250 utils for you. Now, let’s say your annual salary is $90K, although there is a small risk (p = 0.05) that something catastrophic will happen and reduce your income for the year to $14.4K. An insurance company comes along and offers to insure you against the loss of your salary. The cost of the insurance is $4,736. If you buy the policy and catastrophe strikes, the insurance company will pay out the $75,600 that you would otherwise have lost. From the standpoint of maximizing expected utility, would buying this insurance be a good deal for you? What would be the insurance company’s expected monetary value of selling you the policy?