A student prepared the three solutions listed in the table using graduated pipettes. Determine the initial molarities of H₂O₂ in each of the 3 solutions to the correct sig figs.

Using data on a representative sample of college students, the following model was estimated: (standard errors are in parentheses) sat =1,028.1+19.3hsize − 2.2hsize2 − 45.1Female −169.8black + 62.3 female*black (6.29) (3.83) (0.53) (4.29) (12.7) (18.15) n = 4,137 and ? 2= 0.0858 The variable sat is the combined SAT score, hsize is size of the student’s high school graduating class, in hundreds, female is a gender dummy variable equal to one for females and zero otherwise, and black is a race dummy variable equal to one for blacks and zero otherwise.

3- Holding hsize fixed, what is the estimated difference in SAT score between nonblack females and nonblack males? How statistically significant is this estimated difference?

Adam Granger operates a kiosk in downtown Chicago, at which he sells one style of baseball hat. He buys the hats from a supplier for $16 and sells them for $22. Adam’s current breakeven point is 20,250 hats per year.

Assume that Adam’s fixed costs, variable costs, and sales price were the same last year, when he made $28,350 in net income. How many hats did Adam sell last year, assuming a 30% income tax rate? (correct answer is 27,700 - already figured out that step)

What was Adam’s margin of safety last year? Margin of Safety $_____

If Adam wants to earn $51,030 in net income, how many hats must he sell, assuming a 30% tax rate?
# of Hats: _____

How many hats must Adam sell to break even if his supplier raises the price of the hats to $17 per hat?
# of Hats: _____

Adam has decided to increase his sales price to $23 to offset the supplier’s price increase. He believes that the increase will result in a 5% reduction from last year’s sales volume. What is Adam’s expected net income, assuming a 30% tax rate?
Net Income: $_______

5. Suppose that in a city of 10,000 people, there are 4,000 who like football and 6,000 who do not. Suppose that we conduct a poll of 16 citizens. What is the probability that at least half of those polled like football? (Use Binomial approximation to find a decimal answer.) 1

6. Suppose that a random variable X is an Exponential Random Variable with parameter β = 3. (a) What is E(X)? (b) Compute P(X > 2). (c) Compute P(X > 5 | X > 3).

Suppose there is an individual with “well behaved preferences” who consumes bundles of two goods, (X,Y) and this individual is indifferent between bundle 1, (15,3) and bundle 2, (6,12). There is also bundle 3, (10.5, 7.5).

a) List and briefly define the 5 assumptions that define “Well behaved preferences”

b) Between bundles 1 and 3, does the consumer prefer one bundle over the other, or is he indifferent? What about between 2 and 3? Justify your answer mathematically.

Phosphoric acid is a triprotic acid, so H3PO4, H2PO4 ^-, and HPO4 ^2- are all acids. Which of the solutions below would have the lowest pH?

0.1 M NaH2PO4
0.1 M Na2HPO4
0.1 M Na3PO4

An ideal spring is lying horizontally on a frictionless surface. One end of the spring is attached to a wall. The other end is attached to a moveable block that has a mass of 5 kg. The block is pulled so that the spring stretches from its equilibrium position by 0.65 m. Then the block is released (from rest), and as a result the system oscillates with a frequency of 0.40 Hz (that's 0.40 rev/sec) Find:

                Show all your steps

a) The acceleratiuon of the block when the spring is stretched by 0.28 m.

b) the maximum force magnitude exerted by the spring on the block.

c)the oscillation frequency of a 2.5 kg blcok under the same circumstances (i.e. with the same spring and initial displacement).

Why does an ETO operation consider product and process design as a production activity? How does it complicate the production planning and control process?

What is the function for printVector that takes a vector of ints, and prints the values one after the other to screen, with commas in between the values.

For example,

vector<int> numbers{0,3,9};
printVector(numbers);

...should print out:

0,3,9

1. (i) Estimate the specific volume V (cm³/g) for carbon dioxide at 310 K and 8 bar by using

     virial equation. Then, calculate V at similar temperature and 75 bar.   

• This week, Super-Save Supermarket lowered the price of apples from $1 to 90 cents per pound. The quantity of apples sold last week was 200 pounds. This week, the quantity sold was 250 pounds. Calculate the price elasticity of demand. Is it elastic, inelastic, or unitary elastic? What happens to total revenue?
• Using the information given in the previous question, assume that last week Super-Save Supermarket sold 150 pounds of bananas and this week it sold 120 pounds of bananas. Are bananas and apples complements or substitutes? What is the cross elasticity of demand?

My elasticity is equaling 2. I'm I correct or I'm missing something?

Discuss the role of nursing in implementing music listening/therapy in hospitals. How can nurses impact, support, and sustain the change. (Write half a page)

Plan, Do, Study, Act (PDSA): Design test of change- In a perfect world, how would you go about using the PDSA cycle to implement music therapy?

Consider the following project data: A Shs 4 million feasibility study will be conducted at t =0. If the study indicates potential, the firm will spend Shs 20 million at t= 1 to build a prototype. The best estimate is that there is an 80% chance that the study will indicate potential and 20% chance that it will not. If reception of the prototype is good the firm will spend Sh. 700 million to build a production plant at t=2. The best estimate is that there is a 70% chance that the prototypes’ reception will be poor. If the plant is built, there’s a 60% chance of a t=3 cash inflow of Shs 600 million and a 40% chance of Shs 300 million cash inflow. If the inflow at t=3 is Shs 600 million, there are 30% and 70% chances of Shs 320 million and Shs 180 million inflows respectively at t=4. If the inflow at t=3 is Shs 300 million, there are 80% and 20% chances of Shs 420 million and Shs 280 million inflows respectively at t=4. The plant has a salvage value of Shs 100 million at t=5.

If the appropriate cost of capital is 14% what is the project’s expected NPV?

Suppose some FSM has 3 inputs, internal Ready, external bus-grant Grant, and external bus-free Free signals, as well as 2 outputs, bus-request Req and bus-lock Lock signals. Show its Moore-type state diagram, assuming that the FSM implements the following bus protocol: (1) initially, the FSM outputs Req = 0 and Lock = 0 and waits for both Ready and Free to be asserted; (2) After receiving Ready = 1 and Free = 1, the FSM outputs Req = 1 and Lock = 0 and waits for Grant to be asserted; (3) After receiving Grant = 1, provided that both Ready and Free still equal 1, the FSM outputs Req = 0 and Lock = 1 and waits for Ready to become 0; once Ready = 0, the FSM returns to step (1).
NOTE: Should Ready and/or Free become 0 while waiting for Grant = 1, the FSM returns to step (1). The FSM ignores the Grant input in steps (1) and (3), and it ignores the Free input in step (3).