The reliability of a particular skin test for tuberculosis (TB) is as follows: the sensitivity of the test is 0.9 (the test comes back positive 90% of the time if the subject has TB) and the specificity of the test is 0.95 (if the subject does not have TB, the test comes back negative 95% of the time). In a large population, only 0.3% (0.003) of the people have TB. A person is selected at random and given the test, which comes back positive.

a) create a hypothetical 100,000 table to answer question b.

b) What is the probability that that person actually has TB?

You are analysing four different stocks. The expected market return is 10% with a standard deviation of 20%. The risk free-rate is 2%. Assume the Capital Asset Pricing Model (CAPM) holds and you base your conclusion completely on CAPM. Indicate in the table below which of the following securities is underpriced, overpriced or correctly priced.

A Unity feedback system has an open loop transfer function of

G(s) = K / s (s+1) (s+5)

Draw the root locus plot and determine the value of K to give a damping ratio of 0.3 A network having a transfer function of 10(1 +10s) /(1 +100s) is now introduced in tandem. Find the new value of K, which gives the same damping ratio for the closed -loop response. Compare the velocity error constant and settling time of the original and the compensated systems

You own a portfolio of two stocks. Red River Inc. has an expected return of 9% and a standard deviation of 15% while Boston Harbor Co. has an expected return of 15% with a standard deviation of 19%.

a. What percent of your portfolio must you invest in each stock if you wanted to earn a 12.4% return on the portfolio? (Hint: Consider W1+W2=1.0)

b. If the correlation coefficient is 0.3, what is the standard deviation of this portfolio? Is risk reduced at these weights relative to the risk of the individual assets? Why?

Medical marijuana is a controversial subject that appears in the news on a regular basis. Should it be legalized for medical purposes, for any purpose (like in Colorado), or should the new strain of Cannabis (Charlotte’s Web), which has less than 0.3% THC (this is the chemical that creates the high) be used instead? The formal paper for this class will discuss the two types of marijuana and whether either one should be legalized for medical purposes or legalized for general purposes. Meet the page of 3-4 pages

I will give you a like and a comment

3. A random sample of wolf dens in the southwestern United States is taken. The number of pups found are:

5 8 7 5 3 4 3 9 5 8 5 6 5 6 4 7

a. Find a 90% confidence interval for the population mean number of wolf pups per den. Include the sample statistics, degrees of freedom, LaTeX: t_{\frac{\alpha}{2}}t α 2 , standard error and a sentence.
b. What sample size is needed for the margin of error to be 0.3?   

can someone show the work to this question

Roger has a levered cost of equity of 0.18. He is thinking of investing in a project with upfront costs of $8 million, which pays $1 million per year for the next 8 years. He is going to borrow $2 million to offset the startup costs at a rate of 0.08. His tax rate is 0.3. He will repay this loan at the end of the project. What is the NPV of this project, using the FTE method?

You Answered

Correct Answer

-4,134,468 margin of error +/- 10,000

A journal published a study of the lifestyles of visually impaired students. Using​ diaries, the students kept track of several​ variables, including number of hours of sleep obtained in a typical day. These visually impaired students had a mean of 9.06hours and a standard deviation of 2.11 hours. Assume that the distribution of the number of hours of sleep for this group of students is approximately normal. Complete parts a through c.

A. Find P(x<6)

b. Find P(8≤x≤10)

c. Find the value a for which P(x<a)= 0.3

A price quote for equipment at Paul Engineering has been received at a cost of $100,000. The operation and maintenance costs of this equipment are estimated to be about $20,000 per year. Salvage value is expected to be $10,000 when the machine is retired. The life of this equipment is estimated to vary anywhere from 5 to 9 years with the associated probabilities as shown in the table below. If the interest rate is 10%, what is the expected EUAC for this equipment?