a) A sample of 8 observations collected in a regression study on two variables, x(independent variable) and y(dependent variable). The sample resulted in the following data.
SSR=66, SST=86
Calculate an unbiased estimate of the variance of the error term epsilon.
b) A sample of 11 observations collected in a regression study on two variables, x(independent variable) and y(dependent variable). The sample resulted in the following data.
SSE=22, SSR=64
Calculate the coefficient of determination for the developed estimated regression equation.
c) A sample of 11 observations collected in a regression study on two variables, x(independent variable) and y(dependent variable). The sample resulted in the following data.
SSR=76, SST=83, summation (x_i-xbar)2=25, summation (x_i-xbar)(y_i-ybar)=49.
Calculate the t test statistics to determine whether a statistically linear relationship exists between x and y.
d)
A sample of 8 observations collected in a regression study on two variables, x(independent variable) and y(dependent variable). The sample resulted in the following data.
SSR=73, SST=86
Calculate the F test statistics to determine whether a statistically linear relationship exists between x and y.
In: Statistics and Probability
Proka is evaluating two projects for investment purposes. The required return for each project is 8 percent and the cash flows are listed below:
| YEar | Project A | Project B | |
| Cash flow in $ | Cash Flow in $ | ||
| 1 | 100 | 300 | |
| 2 | 400 | 400 | |
| 3 | 400 | 400 | |
| 4 | 400 | 400 | |
| 5 | 300 | 100 |
1. Calculate the net present value for each stream
2. Calculate the net present value of each cash flow stream at 0 percent discount rat
In: Finance
Two induction coils are wound on the same form as shown in Figure 8. Explain what the symbols L1, L2, M refer to, and explain the significance black dots shown. [5 marks] Figure 8: Self-inductances and mutual inductance
In: Electrical Engineering
A two-year, 8% coupon bond with a face value of $1,000 has a current price of $1,000. Assume that the bond makes annual coupon payments. The term structure of interest rates is flat.
(a) What is the bond’s yield-to-maturity?
(b) Using the concept of duration, find the approximate percentage change in the price of the bond if the yield-to-maturity drops by 1%.
(c) Compared with the coupon bond in this problem, would the price of a two-year, U.S. Treasury STRIP change more or less in response to the change in interest rates? Why?
In: Finance
3. Determine the available strength of two 3/8 in fillet welds that are loaded parallel to their length, are 10 inches long and are made from E70 electrodes. Determine the design strength by (a) LRFD and (b) ASD. [10.11- 25]
4. If the welds of the problem #3 above were loaded at their centroid and at 90 degrees to the weld length, determine the design strength by (a) LRFD and (b) ASD. [10.11- 29]
In: Civil Engineering
There are 8 dimensions of effective Microsystems. Which two (2) do you believe are the most important and why? Please provide examples to illustrate your position. Don’t forget to cite sources to support your position.
In: Operations Management
According to the Harvard Business Review, The 8 Types
of Company Culture. Explain two factors in terms of cultural norms
and two dimensions ( how people respond to change and how people
interact). Use real life experiences!
Caring, Results, Purpose, Learning, Enjoyment, Authority, Safety,
and Order are the 8 types. Explain
In: Operations Management
In: Mechanical Engineering
Question 8. There are two types of works: some have a high productivity, aH, and some have low productivity, aL. Workers can get a job after leaving high school or they can 2 go to college at a cost of cH for high productivity workers and cL for low productivity workers. Assume that aH > aL > 0 and cL > cH > 0. Education has no impact on productivity. Describe a separating equilibrium in which employers pay workers a wage equal to the expected productivity conditional on the level of education. What conditions must be satisfied by the parameters aH, aL, cH and cL in order for such as separating equilibrium to exist?
In: Economics
A homemade capacitor is assembled by placing two 10 in pie pans 8 cm apart and connecting them to the opposite terminals of a 9 V battery.
(a) Estimate the capacitance.
pF
(b) Estimate the charge on each plate.
pC
(c) Estimate the electric field halfway between the plates.
V/m
(d) Estimate the work done by the battery to charge the
plates.
J
(e) Which of the above values change if a dielectric is inserted?
(Select all that apply.)
electric fieldchargework done by the batterycapacitance
In: Physics