Your Mini Project is going to be centered on an actual statistical study that you will design, conduct, and analyze.

Use excel, SPSS or a computer program of your choice to complete these exercises. Choose a variable that will permit the use of dependent samples.

For example, you might wish to see if a person’s weight has changed after diet. Select a sample of data (10 to 50) value pairs (e.g before and after), and then complete the following:

a. Purpose of the study.

b. Define population.

c. How were the sample selected?

d. State the hypothesis.

e. What was the test value?

f. Decision-making.

g. Write a paragraph summarizing the results.

Please help me.. and answer detail... thnk u

Two balls of mass 3.29 kg are attached to the ends of a thin rod of negligible mass and length 72 cm. The rod is free to rotate without friction about a horizontal axis through its center. A putty wad of mass 127 g drops onto one of the balls, with a speed 2.5 m/s, and sticks to it. What is the angular speed of the system just after the putty wad hits?

1.31×10^-1 rad/s

What is the ratio of the kinetic energy of the entire system after the collision to that of the putty wad before the collision (in percent)?

In a shooting field where noone can get hurt, there is a vertical square plastic board, 0.100 m on a side and with mass 0.800 kg , that rotates on a horizontal axis along its top edge. The center of the plastic board is hit by a bullet with mass 1.50 g that is moving with 300 m/s and that stays embedded in the plastic board.

a)Find the angular velocity of the plastic board right after the bullet's hit?

b)Calculate the maximum height above the equilibrium position does the center of the plastic board reach before starting to go back down again?

c)Find the minimum bullet velocity which would be required for the plastic board to swing all the way over after impact?

An object of mass

m₁ = 0.415 kg

starts from rest at point  and slides down an incline surface that makes an angle

θ = 36.0°

with the horizontal as shown. The coefficient of kinetic friction between the object and the incline surface is 0.455. After sliding down a distance d = 5.80 m, it makes a perfectly inelastic collision with an object of mass

m₂ = 0.645 kg

at point .

(a) Find the speed of

m₁

at point  just before the collision m/s

(b) Find the energy loss during the collision. Enter the magnitude.

J

(c) After the collision, the objects travel on a horizontal surface with a kinetic coefficient of 0.455. How long does it take until the objects come to rest at point ?.

  s

Consider the market for trinkets, where the demand and supply aregiven by the formulas:Demand :Quantity=100−PriceSupply :Quantity=−20+2∙Price (a) (10 points) Draw the demand and supply curves, and find the equilibriumprice and equilibrium quantity. (b) (10 points) Imagine that the government introduces a price cap of $30.Compare the consumer surplus before and after the cap is introduced.Are consumers better off or worse off? (c) (10 points) Imagine that now the price cap is reduced to $20. Comparethe consumer surplus after the new price cap with the consumer surpluswithout any cap. Are consumers better off or worse off?

please include an explanation of what steps you are taking to solve this problem thank you

An engineer is working on the layout of a new research and experimentation facility. Two plant operation will be required. If, however, an addition $100,000 of instrumentation and remote controls were added, the plant could be run by a single operato. The total before-tax cost of each plant operator is projected to be $35,000 per year. The instrumentation and controls will be depreciated by means of the modified accelerated cost recovery system (MACRS)

If this corporation (34% combined corporate tax rate) invests in additional instrumentation and controls, how long will take for after-tax benefits to equal the $100,000 cost? In other words what is the after-tax payback period?

NOTE: Please Use a net tax rate of 22.98% for the problem (disregard the rate given in the problem)

Write a one-and-a-half-page essay (double spaced, Times New Roman font size 12) explaining what happens to the market of scrapbooking stickers if the price of scrapbooks decreases. Scrapbook stickers and scrapbooks are complements and suppliers can easily supply both. In your essay, explain why and how the demand or supply (or both) change, what happens immediately after the shift before a new equilibrium is reached, and what happens to the new equilibrium price after the shift. Assuming the new equilibrium quantity increases, explain who the change in the price of scrapbooks affected the most: consumers or suppliers. Your essay must include a conclusion paragraph and must be well written with little to no grammatical errors.

Edward signs a 30 year mortgage at 3.5% compounded monthly. The price of his house is $200,000. He makes a down payment of 40,000. Answer the following:

What will be his monthly payments?

After 5 years, he makes a one-time payment of $50,000 (against the remaining principle). How many months will he have remaining on his mortgage? To avoid any confusion, he will have exactly 25 years remaining before he makes the $50,000 in payment.

Edwards decides that instead of reducing the NPER after making the $50,000, he requests the bank to keep the NPER to 25 years and reduce his monthly payment instead. What will be his monthly payment going forward?

A construction company is considering acquiring a new earthmover. The purchase price is ​$110,000​, and an additional ​$25,000 is required to modify the equipment for special use by the company. The equipment falls into the MACRS​ seven-year classification​ (the tax​ life), and it will be sold after five years​ (the project​ life) for $50,000. The purchase of the earthmover will have no effect on​ revenues, but the machine is expected to save the firm $68,000 per year in​ before-tax operating​ costs, mainly labor. The​ firm's marginal tax rate is 25​%. Assume that the initial investment is to be financed by a bank loan at an interest rate of 10% payable annually. Determine the​ after-tax cash flows by using the generalized cash flow approach and the worth of the investment for this project if the​ firm's MARR is known to be 12%.

Two cars collide at an intersection. Car A, with a mass of 2000 kg , is going from west to east, while car B, of mass 1300 kg , is going from north to south at 17.0 m/s . As a result of this collision, the two cars become enmeshed and move as one afterwards. In your role as an expert witness, you inspect the scene and determine that, after the collision, the enmeshed cars moved at an angle of 65.0 ∘ south of east from the point of impact.

Part A: How fast were the enmeshed cars moving just after the collision?

v=_____________m/s

Part B: How fast was car AA going just before the collision?

Va=_____________m/s