11. Given a concrete mix as follows:

Cement            1 bag               3.15

Water              60 lbs.              1.0

Sand                230 lbs.            2.65 (5% excess moisture)

Gravel             380 lbs.            2.66 (2% excess moisture)

            Determine the quantity of each item that you would use for a 27 cubic foot mixer (you must only use whole bags of cement) weights for sand and gravel, bags for cement and gallons for water (ONE (1) CUBIC FOOT OF WATER = 7.48 GALLONS).

One hundred students were placed into two groups. The two groups were the South Beach diet and Keto diet. Below are the data for pounds lost after 1 month of dieting. Assume the data are normal and that the sample size is 100 (but, use the values you have). Tell me if there is a difference between the two diets. Show all of your work.

Given the following information, fill out the following table and determine what should be the optimal capital structure for Concours Corp. The company has $10 million in assets, a marginal tax rate of 30%, and each million in debt used causes Rd to increase by 1.0% and Rs to increase by .8%.

2.(3) Translate the following statement into a balanced chemical equation.

Three moles of calcium chloride react with two moles of sodium phosphate to produce solid calcium phosphate and six moles of sodium chloride.

3.(3) 50.0 mL of 1.0 M Ag(NO3) is added to 5.55 g of CaCl2 (MM=111.0 g). What is the concentration of nitrate ion in the final solution in moles/liter?

3a.(3) How many grams of silver chloride can be produced in this reaction?

3. a) Calculate the pH of a sodium acetate-acetic acid buffer solution (Ka= 1.78 x 10-5) in
which the concentration of both components is 1.0 M. What would be the pH of the
solution if 1.5 mL of 0.50 M NaOH was added to 35.0 mL of the buffer? How much
does the pH change?

b) If the same amount and concentration of NaOH was added to 35.0 mL of pure water
(initial pH = 7), what would be the resulting pH change?

Expected Return: Discrete Distribution

A stock's return has the following distribution:

Calculate the stock’s expected return and standard deviation. Do not round intermediate calculations. Round your answers to two decimal places.

Expected return:   %

Standard deviation:   %

A coal fired plant burns 1000 metric tons of coal per day at 2% sulfur. ( 1 metric ton = 1000 kg). a. What is the SO2 emission rate? b. What is the SO2 concentration 1.0 km downwind (x = 1000m)? c. 0.1 km off centerline in y direction (y = 100m)? and d. At ground level (z = 0) wind speed is 4 m/s and it’s a cloudy day? Stability =D; σ_y = 68m; σ_z = 37m

The current spot exchange rate between the US Dollar and the Yen is 113 (i.e., $1 buys 113 Yen). What is the “fair price” for a 12month forward contract (dollars for yen) if the US borrowing cost is 5% per annum and the investment return on a Yen denominated Certificate of Deposit is 1.0%?  Given the above information, would you purchase a forward contract offered at 105 Yen to the Dollar from your dealer or create a “synthetic forward contract” on your own? Why?

You have just received a batch of goods from your supplier. You plan to sample the batch in order to determine whether you will accept it or not. For this product, your contract with the supplier specifies that 3.0% is an acceptable quality level and the LTPD is 18.0%. The contract further specifies that the buyer’s risk should be 2.5% and the seller’s risk should be 1.0%.
Given these parameters for your sampling plan, what is the least number of defective items you would have to find in the sample so as to reject the batch?