The following random sample of weekly student expenses in dollars is obtained from a normally distributed population of undergraduate students with unknown parameters.
|
8 |
56 |
76 |
75 |
62 |
81 |
72 |
69 |
91 |
84 |
|
49 |
75 |
69 |
59 |
70 |
53 |
65 |
78 |
71 |
87 |
|
71 |
74 |
69 |
65 |
64 |
|||||
You have been charged to conduct a statistical test in SPSS to verify the claim that the‘average weekly student expenses’ is different than 74 dollars using an alpha level of 5%.
What is the appropriate test that is applicable in this case. Explain your reasoning.
State the null and alternate hypotheses in this case using proper statistical notations.
List one assumption that you are making about the distribution.
Insert a copy of the summary table of descriptive statistics generated in SPSS.
Insert a copy of the table for the statistical test you conducted in SPSS.
Drawing on information from the tables in (e) and/or (f) show how they relate to t-statistic as obtained in SPSS.
What is/are the critical value(s) of the test statistic at the 5% significance level.
What can you conclude about the claim based on the results generated from the statistical test? Make sure to support your conclusion by referencing the appropriate statistics from the test.
Compute the 90% confidence interval for the average weekly expenses.
Compute the Cohen’s d effect size.
In: Math
Download the attached file/s, copy and paste the code segment/s into your visual studio or any other C++ IDE and run it. You will have to implement a small intentional bug in your program and post it for other students to debug.
To be able to receive your full discussion points, you need to submit the following.
Following is your check list and rubric
Attach your .cpp file/s with an
implemented bug - 20pnts
Describe what the code does in
detail - 20pnts
Debug at least one other program and
submit your .cpp file - 40pnts (note what the bug was in
comments)
After running the debugged program,
attach the screen shot of your output- 20pnts
// This program uses a function that returns a value.
#include <iostream>
using namespace std;
// Function prototype
int sum(int num1, int num2);
int main()
{
int value1 = 20, // The first value
value2 = 40, //
The second value
total; // Holds the
returned total
// Call the sum function, passing the contents
of
// value1 and value2 as arguments. Assign the
return
// value to the total variable.
total = sum(value1, value2);
// Display the sum of the values
cout << "The sum of " << value1 << "
and "
<< value2 <<
" is " << total << endl;
return 0;
}
/*********************************************************
*
sum
*
* This function returns the sum of its two parameters. *
*********************************************************/
int sum(int num1, int num2)
{
return num1 + num2;
}
In: Computer Science
What data type will Python pick for the following variable?
radio = '101.5'
| A. |
integer (i.e. int) |
|
| B. |
string (i.e. str) |
|
| C. |
floating point number (i.e. float) |
|
| D. |
list |
Which of the following Python statements changes the first element of a tuple my_tuple to 17?
| A. |
my_tuple[0] = 17 |
|
| B. |
my_tuple[0] == 17 |
|
| C. |
both (A) and (B) |
|
| D. |
none of the above |
Suppose there are two sections of CSC121 and each section has 10 students. Their midterm exam scores are stored in two lists score_list1 and score_list2. Which of the following Python program fragments displays all these midterm exam scores?
| A. |
combined_list = [score_list1, score_list2]
for element in combined_list:
for score in element:
print (score) |
|
| B. |
combined_list = score_list1 + score_list2
for element in combined_list:
print (element) |
|
| C. |
both (A) and (B) |
|
| D. |
none of the above |
def main():
age = float(input('Enter age: '))
# insert statement here to call the buffet_price function
print('Please pay $', price)
def buffet_price(age):
if age >= 60 or age <= 10:
price = 9
else:
price = 12
return price
main()
Which of the following statements should be used to call the buffet_price function?
| A. |
buffet_price(price, age) |
|
| B. |
buffet_price(age, price) |
|
| C. |
price = buffet_price(age) |
|
| D. |
age = buffet_price(price) |
In: Computer Science
Consider a particle with initial velocity v that has magnitude 12.0m/s and is directed 60.0 degrees above the negative x axis.
a. What is the x component vx of v?
b. What is the y component vy of v?
c. Look at this applet (I don’t have a copy of the applet, sorry). The motion diagram for a projectile is displayed, as are the motion diagrams for each component. The x component motion diagram is what you would get if you shined a spotlight down on the particle as it moved and recorded the motion of its shadow. Similarly, if you shined a spotlight to the left and recorded the particle’s shadow, you would get the motion diagram for its y component. How would you describe the two motion diagrams for the components?
d. How long ts does it take for the balls to reach the ground? Use 10 m/s2 for the magnitude of the acceleration due to gravity.
e. Imagine that the ball on the left is given a nonzero initial velocity in the horizontal direction, while the ball on the right continues to fall with zero initial velocity. What horizontal speed vx must the ball on the left start with so that it hits the ground at the same position as the ball on the right?
In: Physics
Determining the Speed of Sound Name Abstract; Include instead of these lines the objectives of the lab (what you investigated), the short description of how you did it and the conclusions formulated based on the obtained results. It should be ½ to 1 page long. Picture of the experimental set up Observations Data Table 1: Calculation of sound wavelength Tuning fork frequency f (Hz ) Length, (water level to top of tube) L (m) Diameter of tube, d(m) λ(m) =4(L + 0.3d) Experimental v(m/s) = f λ Room Temperature, oC Calculations A. Calculate the theoretical speed of sound (v): v = 331.4 + 0.6T0C ( m/s) • 331.4 m/s is the speed of sound at 20oC • T0C is the temperature of air during testing measured in Celsius B. Calculate the percent error of your experimentally derived value: C. Describe what is sound. D. Explain the phenomenon based on which you were able to hear the amplified sound and to determine the speed of sound. You should include a picture or a sketch of the standing waves (the key concept you need to write about) inside the tube. Because this might require different printed or electronic resources, make sure you include the references. E. What is the physical concept behind the “pitch” of a sound and what is the SI unit for it? F. What is the physical concept behind “intensity” of a sound and what is the SI unit for it? G. What are possible sources of errors in this experiment?
In: Physics
In: Economics
High-Low Method, Cost Formulas
The controller of the South Charleston plant of Ravinia, Inc., monitored activities associated with materials handling costs. The high and low levels of resource usage occurred in September and March for three different resources associated with materials handling. The number of moves is the driver. The total costs of the three resources and the activity output, as measured by moves for the two different levels, are presented as follows:
| Resource | Number of Moves | Total Cost | ||
| Forklift depreciation: | ||||
| Low | 5,000 | $2,000 | ||
| High | 15,000 | 2,000 | ||
| Indirect labor: | ||||
| Low | 5,000 | $79,000 | ||
| High | 15,000 | 119,000 | ||
| Fuel and oil for forklift: | ||||
| Low | 5,000 | $3,600 | ||
| High | 15,000 | 10,800 |
Required:
If required, round your answers to two decimal places. Enter a "0" if required.
1. Determine the cost behavior formula of each resource. Use the high-low method to assess the fixed and variable components.
| Forklift depreciation: | |
| V | $ |
| F | $ |
| Y | $ |
| Indirect labor: | |
| V | $ |
| F | $ |
| Y | $ + $X |
| Fuel and oil for forklift: | |
| V | $ |
| F | $ |
| Y | $X |
2. Using your knowledge of cost behavior, predict the cost of each item for an activity output level of 10,000 moves.
| Forklift depreciation | $ |
| Indirect labor | $ |
| Fuel and oil for forklift | $ |
3. Construct a cost formula that can be used to
predict the total cost of the three resources combined. If
required, round your answers to two decimal places.
Materials handling cost = $ + $X
Using this formula, predict the total materials handling cost if
activity output is 10,000 moves.
Y = $
In: Accounting
This is one question with part (a) and part (b) being the solution to the problem.
This problem is based upon two separate, distinct industries, each of which has ten companies. Industry X has companies A, B, C, D, E, F, G, H, I, and J. Industry Y has companies M, N, O, P, Q, R, S, T, U, and V. These two industries are completely unrelated. There is no, absolutely no competition between any of the companies in Industry X with any of the companies in Industry Y. This question is to examine the degree of market concentration, and hence the competitive nature, within each industry.
|
Industry X |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
|
Market Share |
3.57 |
5 |
5 |
3.85 |
4.50 |
4.50 |
5.00 |
4.75 |
60.00 |
3.83 |
|
Industry Y |
M |
N |
O |
P |
Q |
R |
S |
T |
U |
V |
|
Market Share |
18.75 |
3.7 |
18.75 |
18.75 |
3.70 |
4.70 |
3.70 |
4.70 |
4.50 |
18.75 |
Part A: Calculate the HHI in Industry X if Company I files to acquire Company B. Then, using the United States Department of Justice guidelines, discuss whether or not the DOJ could move to block the acquisition?
Part B: Calculate the HHI in Industry Y if Company V files to merge with Company O. Then, using the United States Department of Justice guidelines, discuss whether or not the DOJ could move to block the merger?
In: Economics
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.
In: Physics
In: Physics