Use the following table of states of the economy and stock returns to calculate the expected return on a portfolio of 50 percent Roten and the rest in Bradley.

Newton's law of cooling states that the temperature of an object changes at a rate proportional to the difference between its temperature and that of its surroundings. Suppose that the temperature of a cup of coffee obeys Newton's law of cooling. If the coffee has a temperature of 205 degrees Fahrenheit when freshly poured, and 1 minutes later has cooled to 190 degrees in a room at 64 degrees, determine when the coffee reaches a temperature of 150 degrees.
The coffee will reach a temperature of 150 degrees in how many minutes?

The efficient market hypothesis states that it is impossible for investors to consistently beat the market. Is it also impossible for investors to consistently do worse that the market –

that is, it is possible to pick a bad portfolio of stocks that will do worse than the market? Explain. Ignore trading costs or fees paid to money managers.

b. Assuming that the U.S. Government will never default on its loans, is investing in U.S. government bonds completely riskless? Explain why or why not

1. The paradox of thrift states that an attempt of households to save more may result in them ending up saving less. Could this be the case in the IS-LM model? Answer by finding the multiplier for the effect of an autonomous increase in saving on the equilibrium level of saving, and explain the result.

The paradox of thrift states that an increase in the desire to save can lead ultimately to a decrease in the realized level of saving and taxes. Explain Make sure to provide your answer with the relevant economic, mathematical and graphical presentations.

For each of the following:

• Assign Oxidation States (Numbers) to each atom in reactants and products

• Identify the species being reduced and the species being oxidized

• Balance each redox reaction using the Half-Reaction method

O₂ + ClO^-₂ --> H₂O + ClO²

Al + MnO^-₄ --> MnO₂ + Al(OH)^-₄

NO₂^- + Al --> NH₃ + AlO₂

Also could you please explain how you get the oxidation numbers, i am having trouble with that as well as to how you come up with the added electrons on the half reactions. How do you figure those numbers out?

Please derive the expression of density of states for quantum wells and based on the result of your derivation, please make comment about the advantages of quantum-well lasers as compared to bulk lasers as much as possible.

Thanks in advance!!!

A report states that the mean yearly salary offer for students graduating with a degree in accounting is $48,744. Suppose that a random sample of 50 accounting graduates at a large university who received job offers resulted in a mean offer of $49,850 and a standard deviation of $3400. Do the sample data provide strong support for the claim that the mean salary offer for accounting graduates of this university is higher than the national average of $48,744? Test the relevant hypotheses using α = 0.05. t= p-value=

The following is the transition probability matrix of a Markov chain with states

1,2,3,4
⎛⎞

.4 .3 .2 .1 P=⎜.2 .2 .2 .4⎟ ⎝ .25 .25 .5 0 ⎠

.2 .1 .4 .3
(a) find the probability that state 3 is entered before state 4;

If X0 = 1
(b) find the mean number of transitions until either state 3 or state 4 is entered.

Our textbook states: "As a general rule, an agreement without consideration will not be an enforceable contract, because consideration is so important as the binding element within a contractual relationship." Research and explain why this is so. In so doing, define and discuss the concept of consideration, including within your discussion the distinction between adequacy of consideration and sufficiency of consideration.

This is an open ended question, so just need to answer it with supporting information and why you think so.