Questions
The following random sample of weekly student expenses in dollars is obtained from a normally distributed...

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...

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....

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

Introduction to Projectile Motion Solution(Mastering Physics Chapter 03: Motion in Two Dimensions)

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?

  1. Both the vertical and horizontal components exhibit motion with constant nonzero acceleration.
  2. The vertical component exhibits motion with constant nonzero acceleration, whereas the horizontal component exhibits constant-velocity motion.
  3. The vertical component exhibits constant-velocity motion, whereas the horizontal component exhibits motion with constant nonzero acceleration.
  4. Both the vertical and horizontal components exhibit motion with constant velocity.

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...

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

On of the major aspects of the struggle for civil rights over the centuries has been...

  1. On of the major aspects of the struggle for civil rights over the centuries has been
    1. The demand for voting rights
    2. The demand for equal opportunity
    3. The demand for social justice and racial equality
    4. all of the above
  1. ____The U.S. Bill of Rights is a listing of
    1. Implied rights
    2. Civil liberties
    3. Inalienable rights
    4. Enumerated powers
  2. ____Guarantees of equal treatment under the law to most social groups are
    1. Civil rights
    2. Civil order
    3. Civil disobedience
    4. Civil prerogatives
  3. ____The U.S. Bill of Rights was intended by its Framers to protect individual rights from
    1. Violation by the states
    2. Violation by the local police
    3. Violation by the federal government
    4. Violation by private individuals
  4. ____The first Constitutional Amendment to clearly define citizenship was
    1. The 13 Amendment
    2. The 14 Amendment
    3. The 15 Amendment
    4. The 16 Amendment
  5. ____The 14th Amendment reversed
    1. Barron v Baltimore
    2. The Civil Rights Cases
    3. Plessey v Ferguson
    4. Dred Scott v Sanford
  6. ____ The first Amendment to the U.S. Constitution enumerates
    1. Protections against double jeopardy
    2. Protection against cruel and unusual punishment
    3. Freedom of speech, press, religion, assembly, petition
    4. Freedom of speech, press, religion, assembly, property
  7. ____The 14th Amendment to the U.S. Constitution was intended to protect civil rights against
    1. Violation by the states
    2. Violation by corporations
    3. Violation by foreign companies
    4. Violation by private individuals
  1. In your own words, briefly explain the meaning of the following concepts and why do they exist.
    1. Habeas corpus
    2. Bill of attainder
    3. Ex post facto law
    4. Cruel and unusual punishment

In: Economics

High-Low Method, Cost Formulas The controller of the South Charleston plant of Ravinia, Inc., monitored activities...

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 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...

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

Consider a particle with a charge-to-mass ratio of ?/? = 1 moving in a uniform magnetic...

Consider a particle with a charge-to-mass ratio of ?/? = 1 moving in a uniform magnetic field of B = 1 Tesla applied in z-direction. At time t = 0 s, it is located at r = (0, 10, 0) m and its velocity is v = (10, 0, 0) m/s.

(a) Qualitative motion

Draw a diagram of the situation when the proton starts its motion, showing its instantaneous velocity v0, the magnetic field vector B and the direction of the initial force F0 on the proton.

Describe how the velocity of the proton will change as it moves through the magnetic field. Describe changes, if any, in both the magnitude and direction of the velocity.

Describe the path the proton will follow in going through this uniform magnetic field.

Calculate the speed v of the proton.   
[8 marks]

(b) Quantitative motion

Determine the magnetic force acting on the proton initially.

Find the radius of the circular path the proton follows in terms of its charge q, mass m and speed v, and the strength of the magnetic field B. Then, calculate the numerical value of that radius for the proton.

Determine the time required and the angular frequency for one complete revolution.
[6 marks]

(c) Deriving equations of motion

Starting with the magnetic force on the particle and using Newton's second law to write down the differential equations for the components ax , ay and az of the acceleration a acting on the particle.

Describe the motion of the particle in z-direction if the initial velocity component in that direction vz is not zero. Describe how the overall motion of the particle changes in that case .
[6 marks]

In: Physics