Nast stores has derived the following consumer credit-scoring model after years of data collect Y=(0.20 x Employment) + (0.4 x Homeowner) + (0.3 x Cards)

Employment = 1 if employed part-time, and 0 if unemployed

Cards= 1 if presently has 1-5 credit cards, 0 otherwise

Nast determines that a score of at least 0.70 indicates a very good credit risk, and it extends credit to these individuals. (each letter below is a separate question, answer a-d)

PLEASE SHOW ALL WORK

A. If Janice is employed part-time, is a homeowner, and has six credit cards at present, does the model indicate she should receive credit?

B. Janice just got a full-time job and closed two of her credit card accounts. Should she receive credit? Has her credit worthiness increased or decreased, according to model?

C. Your boss mentions that he just returned from a trade-association conference, at which one of the speakers recommended that length of time at present residence (regardless of homeownership status) be include in credit-scoring models. If the weight turns out to be 0.25, how do you think the variable would be coded (i.e., 0 stands for what, 1 stands for what, etc)?

D. Suggest other variables that associated might have left out of the model, and tell how you would code them (i.e., 0,1,2 are assigned to what conditions or variables?).

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Simplifying the ABC System: Equally Accurate Reduced ABC Systems

Selected activities and other information are provided for Patterson Company for its most recent year of operations.

Required:

1. Form reduced system cost pools for activities 7 and 8. Do not round interim calculations. Round your final answers to the nearest dollar.

2. Assign the costs of the reduced system cost pools to Wafer A and Wafer B. Do not round interim calculations. Round your final answers to the nearest dollar.

3. What if the two activities were 1 and 3? Repeat Requirements 1 and 2.

Form reduced system cost pools for activities 1 and 3.

Do not round interim calculations. Round your final answers to the nearest dollar.

Assign the costs of the reduced system cost pools to Wafer A and Wafer B.

Concord Air Express decided to offer direct service from Cleveland to Myrtle Beach. Management must decide between a full-price service using the company’s new fleet of jet aircraft and a discount service using smaller capacity commuter planes. It is clear that the best choice depends on the market reaction to the service Concord Air offers. Management developed estimates of the contribution to profit for each type of service based upon two possible levels of demand for service to Myrtle Beach: strong and weak. The following table shows the estimated quarterly profits (in thousands of dollars):

1. What is the decision to be made, what is the chance event, and what is the consequence for this problem? How many decision alternatives are there? How many outcomes are there for the chance event?
2. If nothing is known about the probabilities of the chance outcomes, what is the recommended decision using the optimistic, conservative, and minimax regret approaches?
3. Suppose that management of Myrtle Air Express believes that the probability of strong demand is 0.7 and the probability of weak demand is 0.3. Use the expected value approach to determine an optimal decision.
4. Suppose that the probability of strong demand is 0.8 and the probability of weak demand is 0.2. What is the optimal decision using the expected value approach?
5. Use graphical sensitivity analysis to determine the range of demand probabilities for which each of the decision alternatives has the largest expected value.
6. PLz show details for each step and give explanations. Thank you^^

1. How will the equivalence point volume change if you titrate the two solutions in question 2? What is the pH of the equivalence point of the two solutions if you titrate with 0.3 M NaOH?

Note: You do not need to answer question 2 in order to do question 3.
The two solutions that question #3 refers to are:
(1) a 10-mL vinegar solution that has a concentration of 5% (w/v%)
(2) a 10-mL vinegar solution that has a concentration of 5% (w/v%) together with 30mL of water

Each one of these solutions is then titrated separately with the NaOH solution. Ka for acetic acid is listed in question #1 ii. Calculate the amount (in mL) of a 1.520M NaOH that is required to add the following acetic acid solutions to prepare a buffer with the corresponding pH: pKa of acetic acid = 4.74

1. 30.00mL of a 5.00% (w/v%) acetic acid; the resulting acetate buffer has a pH of 5.75
2. 50.00mL of a 5.00% (w/v%) acetic acid; the resulting acetate buffer has a pH of 4.98
3. 40.00mL of a 5.00% (w/v%) acetic acid; the resulting acetate buffer has a pH of 4.33

Hint: Set up an equilibrium table for a reaction between acetic acid and NaOH (similar to the examples that we did in lectures). However, in this case, the mole of NaOH in the equilibrium table is a function of volume (i.e. MNaOH.V) and it will be the limiting reagent in the equilibrium table. You will then use the Henderson-Hasselbalch equation to determine the volume of NaOH (i.e. V) that is required to prepare the specific acetate buffer solution at the corresponding pH.

Levi-Strauss Co manufactures clothing. The quality control department measures weekly values of different suppliers for the percentage difference of waste between the layout on the computer and the actual waste when the clothing is made (called run-up). The data is in table #11.3.3, and there are some negative values because sometimes the supplier is able to layout the pattern better than the computer ("Waste run up," 2013). Do the data show that there is a difference between some of the suppliers? Test at the 1% level.

Table #11.3.3: Run-ups for Different Plants Making Levi Strauss Clothing

6) A solution of sodium chloride (molecular weight 58.5) is electrolyzed and it is found that a
current of 1 A liberates 1.3 x 10-3 kg of chlorine (atomic weight 35.5) in one hour. Sodium
chloride crystals of density 2.17 x 103 kg/m3 are analyzed by x rays and the unit cell parameter is
found to be 5.6 x 10-10 m. From these data calculate the charge on a monovalent ion.

7) In a Milikan oil-drop experiment, a certain droplet was found to fall freely in air at a steady rate
of 1.15 x 10-4 m/sec. between horizontal plates 3 mm apart. When an electrical potential
difference of 400 V was applied between the plates, the droplet rose steadily at 1.2 x 10-5 m/sec;
while at 300 V, the droplet fell steadily at 1.8 x 10-5 m/sec. Find the magnitude of the charge on
the drop, given that the viscosity of the air is 1.8 x 10-5 mks units, and the density of the oil used
was 900 kg/m3.

8) In an experiment to determine e/m for electrons by J. J. Thomson’s method, the particles were
deflected by a uniform electrostatic field of 50000 V/m applied between plates 0.05 m long. The
deflection produced on a screen placed 0.3 m away from the center of the plates was 0.05 m.
This deflection was exactly canceled by applying a magnetic field of 0.001 Tesla coextensive with
the electric field. Find the speed of the electrons, their specific charge, and the accelerating
voltage.

1. A mass weighing 10 lbs. is attached to a spring suspended from the ceiling. The mass will stretch the spring 6 inches. If the mass is pulled 5 inches below its equilibrium point and given an initial upward velocity of 0.3 ft./sec. and if damping forces are neglected, then what is the equation of motion of the mass? What is the amplitude of the motion?

2. A 980-newton force stretches a spring 0.4 meters. If a 200 kg mass is attached to the spring and pulled 0.5 meters below its equilibrium point and released, neglecting damping forces, what is the equation of motion of the mass?

3. A mass weighing 8.2 pounds will stretch this spring 1.36 feet. The spring/mass system is damped by a force that is 1.5 times the instantaneous velocity of the mass. Determine the equation of motion of the mass, if the mass is stretched 1 foot below its equilibrium point and released.

4. A 1 newton force will stretch a spring 1 meter. The spring/mass system is damped by a force that is 8 times the instantaneous velocity. A 12 kg mass is attached to the spring. The spring is compressed 0.8 meters above the equilibrium position and given an initial downward velocity of 3 m/s. Determine the equation of motion of the mass

5. A mass weighing 3(1/5) pounds stretches a spring by 1 foot. If the spring/mass system is damped by a force that is twice the instantaneous velocity and this same mass is given an initial upward velocity of 1.3 ft/sec from the equilibrium position, then what is the equation of motion of the mass?

A kitchen appliance manufacturer is deciding whether or not to in- troduce a new product. Management has identified three possible demand regimes, with associated projected income for the first year of operation. In addition, if the company decides to produce the new product, it can do so by using its existing facilities, which will cost it $3,500,000 in renovations; or build a new facility, which will cost $6,500,000. Expanding will allow it to make more product and so its potential sales can be higher. The following table contains a summary of management expectations:

The company believes that if the new product is not introduced, in the first year of operation the company will loose $10,500,000 in sales to competitors in a high demand regime, $1,500,000 in a medium demand regime, and $0 in a low demand regime.

(a) Construct a payoff table and decision tree for this problem.
(b) Using the expected value approach, what should the company do?
(c) The company finds itself in a difficult financial situation. How does this information affect your recommendation in part (b)?
(d) A consulting company claims it can perform a more thorough market research study. In your opinion, should this study be performed?
(e) The company has the option of constructing a new facility after 1 year of operation. In your opinion, which conditions would warrant an expansion after year 1?

A study is done to determine if students in the California state university system take longer to graduate, on average, than students enrolled in private universities. One hundred students from both the California state university system and private universities are surveyed. Suppose that from years of research, it is known that the population standard deviations are 1.5231 years and 1 year, respectively. The following data are collected. The California state university system students took on average 4.6 years with a standard deviation of 0.8. The private university students took on average 4.2 years with a standard deviation of 0.3. Conduct a hypothesis test at the 5% level. NOTE: If you are using a Student's t-distribution for the problem, including for paired data, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.)

-state the null hypothesis

-state the alternative hypothesis

-In words, state what your random variable X_state − X_private  represents.

-State the distribution to use for the test. (Round your answers to two decimal places.)

X_state − X_{private ~ __ ( __ , __ )}

_-What is the test statistic? (If using the z distribution round your answer to two decimal places, and if using the t distribution round your answer to three decimal places.)
-What is the p-value? (Round your answer to four decimal places.)
-Sketch a picture of this situation. Label and scale the horizontal axis and shade the region(s) corresponding to the p-value. (Upload your file below.)

-(i) Alpha (Enter an exact number as an integer, fraction, or decimal.)
α =

-decision rejected or or do not reject