QUESTION 7

Which of the following measures the degree of linear association between two variables?

a. covariance. b. standard deviation. c. variance. d. coefficient of variation

QUESTION 8

If the sample size becomes larger, to which distribution does the sampling distribution of the sample mean converge?

a. Normal distribution. b. Poisson distribution. c. Binomial distribution. d. Uniform distribution.

QUESTION 9

Which of the following means an estimate of a population parameter that provides an interval of values believed to contain the value of the parameter?

a. Point estimate. b. Interval estimate. c. Standard error. d. Sample mean.

QUESTION 10

In hypothesis testing, which of the following means the tentative assumption about the population parameter?

a. Confidence level. b. Alternative hypothesis. c. Null hypothesis. d. Significance level.

7. a) A firm producing two goods (X and Y) has the following profit (?) function: Profit: ? =80X-2X2 - XY-3Y2 +100Y Maximum Capacity: X+Y=12 What are the values of X and why that maximizes profits subject to the firm’s maximum capacity? b) Consider the following utility function for a consumer, who consumes goods X and Y whose prices are $8 and $12respectively. Utility function: U=XY+3X+Y If the consumer’s money income (budget is $112), what are the utility maximizing values of X and Y?

7. Given the standard reduction potential for the following two half-cell reactions (in the presence of 1.00 M HCl):

Fe3+ + e <==> Fe2+, E0 = + 0.68 V

AsO4 - + 2H+ + 2e <==> AsO3 - + H2O, Eo = +0.559 V.

Please calculate the system potential at the equivalence point when Fe3+ was used to titrate AsO3 - in the presence of 1.00 M HCl.

Answer: 0.60 V

1. A 10-volt voltage source is connected in a series arrangement with two resistors (R1 = 7 ohms, R2 = 3 ohms). The current flowing in each resistor is:

a) 1.8 amperes   b) 45 amperes   c) 0.05 amperes   d) 1 ampere    e) 3.5 amperes

2. What is the voltage across R2 in the above circuit?

a) 2 volts   b) 10 volts   c) 3 volts   d)   0.25 volts   e)   5 volts

       3. If R1 and R2 are now connected in parallel, what is their effective resistance?

a) 2.1 ohms    b) 10 ohms   c) 14.8 ohms   d) 0.04 ohms    e) 4 ohms

. A 10 volt battery is connected to a RC DISCHARGE circuit made up of an unknown capacitor that is connected in parallel with a 1,000 ohm resistor. If the half life of this circuit is 10 seconds, what is the value of the unknown capacitor?

a) 0.0144 F   b) 12.28 F    c)   16.2 F   d)   0.025 F   e) 693 F

5. How long will it take this circuit to discharge from 10 volts to 1.25 volts?

a)   22 s    b) 69 s    c)   100 s    d) 30 s    e) 125 s

6. A wire carrying 10 amperes of current is oriented at 90 degrees with respect to a magnetic field of 5 Tesla. How long must the wire be to generate a force of 5 Newtons?

a) 0.1 meters   b) 15 meters   c) 2 meters   d) 7.07 meters    d) 0.005 meters

Suppose that there are two independent economic factors, F1 and F2. The risk-free rate is 7%, and all stocks have independent firm-specific components with a standard deviation of 47%. Portfolios A and B are both well-diversified with the following properties: Portfolio Beta on F1 Beta on F2 Expected Return A 2.2 2.5 25 % B 2.8 –0.25 20 % What is the expected return-beta relationship in this economy?

Calculate the risk-free rate, rf, and the factor risk premiums, RP1 and RP2, to complete the equation below. (Do not round intermediate calculations. Round your answers to two decimal places.) E(rP) = rf + (βP1 × RP1) + (βP2 × RP2)

Consider the 7 steps of the Systems Development Life Cycle. What two steps in the process do you feel is the most critical? Can any steps be left out of the cycle?

• Planning

• Needs Analysis

• Design and Acquisition

• Build

• Testing

• Implementation

• Maintenance

uppose that there are two independent economic factors, F1 and F2. The risk-free rate is 7%, and all stocks have independent firm-specific components with a standard deviation of 37%. Portfolios A and B are both well-diversified with the following properties: Portfolio Beta on F1 Beta on F2 Expected Return A 1.3 1.7 27 % B 2.2 –0.17 24 % What is the expected return-beta relationship in this economy? Calculate the risk-free rate, rf, and the factor risk premiums, RP1 and RP2, to complete the equation below. (Do not round intermediate calculations. Round your answers to two decimal places.) E(rP) = rf + (βP1 × RP1) + (βP2 × RP2)

Suppose two independent random samples of sizes n1 = 9 and n2 = 7 that have been taken from two normally distributed populations having variances σ12 and σ22 give sample variances of s12 = 117 and s22 = 19. (a) Test H0: σ12 = σ22 versus Ha: σ12 ≠ σ22 with σ = .05. What do you conclude? (Round your answers to 2 decimal places.) F = F.025 = H0:σ12 = σ22 (b) Test H0: σ12 < σ22versus Ha: σ12 > σ22 with σ = .05. What do you conclude? (Round your answers to 2 decimal places.) F = F.05 = H0: σ12 < σ22

Suppose two independent random samples of sizes n1 = 9 and n2 = 7 that have been taken from two normally distributed populations having variances σ12 and σ22 give sample variances of s12 = 94 and s22 = 13. (a) Test H0: σ12 = σ22 versus Ha: σ12 ≠ σ22 with σ = .05. What do you conclude? (Round your answers to 2 decimal places.) F = F.025 = H0:σ12 = σ22 (b) Test H0: σ12 < σ22versus Ha: σ12 > σ22 with σ = .05. What do you conclude? (Round your answers to 2 decimal places.) F = F.05 = H0: σ12 < σ22