Consider our “simple model of bid-ask spreads”. suppose that a dealer trades against an order which might come from an informed trader or a liquidity trader. the security’s true value is either $60 or $50. the true value is $60 with 70% probability and $50 with 30% probability. the order is from an informed trader with 20% probability and from a liquidity trader with 80% probability. an informed trader observes the true value of $60 or $50 perfectly and places a buy order if the value is high or a sell order if the value is low. a liquidity traders buys or sells with equal probabilities. what is the expected value of this security?

8. agreement and disagreement among economists suppose that bob, an economist from a university in arizona, and cho, an economist from a public television program, are arguing over saving incentives. the following dialogue shows an excerpt from their debate: cho: i think it's safe to say that, in general, the savings rate of households in today's economy is much lower than it really needs to be to sustain an improvement in living standards. bob: i think a switch from the income tax to a consumption tax would bring growth in living standards. cho: you really think households would change their saving behavior enough in response to this to make a difference? because i don't. the disagreement between these economists is most likely due to . despite their differences, with which proposition are two economists chosen at random most likely to agree? rent ceilings reduce the quantity and quality of available housing. immigrants receive more in government benefits than they contribute in taxes. having a single income tax rate would improve economic performance.

1. descriptive statistics quickly describe large amounts of data can predict future stock returns with surprising accuracy statisticians understand non-numeric information, like colors refer mainly to patterns that can be found in data 2. a 15% return on a stock means that 15% of the original purchase price of the stock returns to the seller at the end of the year 15% of the people who purchased the stock will see a return the stock is worth 15% more at the end of the year than at the beginning the stock has lost 15% of its value since it was originally sold 3. a stock purchased on january 1 cost $4.35 per share. the same stock, sold on december 31 of the same year, brought in $4.75 per share. what was the approximate return on this stock? 0.09% 109% 1.09% 9% 4. a stock sells for $6.99 on december 31, providing the seller with a 6% annual return. what was the price of the stock at the beginning of the year? $6.59 $1.16 $7.42 $5.84

Jacob is a member of wcc (an llc taxed as a partnership). jacob was allocated $155,000 of business income from wcc for the year. jacob’s marginal income tax rate is 37 percent. the business allocation is subject to 2.9 percent of self-employment tax and 0.9 percent additional medicare tax. (round your intermediate calculations to the nearest whole dollar a) what is the amount of tax jacob will owe on the income allocation if the income is not qualified business income? b) what is the amount of tax jacob will owe on the income allocation if the income is qualified business income (qbi) and jacob qualifies for the full qbi duduction?