A statistics instructor wonders whether significant differences exist in her students’ final exam scores in her three different sections. She randomly selects the scores from 10 students in each section. A portion of the data is shown in the accompanying table. Assume exam scores are normally distributed.
Section 1 | Section 2 | Section 3 |
82 | 50 | 72 |
76 | 51 | 79 |
63 | 59 | 96 |
90 | 76 | 86 |
61 | 74 | 54 |
79 | 50 | 86 |
56 | 73 | 78 |
59 | 63 | 83 |
79 | 84 | 95 |
89 | 78 | 95 |
Construct an ANOVA table. (Round "Sum Sq" and "Mean Sq" to 1 decimal place, "F value" to 3, and "p-value" to 3 decimal places. Before fitting your model, type options(scipen=10) and options(digits=10) into your R console.)
ANOVA | |||||
Source of Variation | Df | Sum Sq | Mean Sq | F value | Pr(>F) |
Section | |||||
Residuals |
In: Math
Suppose the origin of the world coordinate system is at the pinhole. Let the z-axis be along the optical axis of the camera (perpendicular to the image plane), and the x and y axes are parallel to the image plane. Let the distance of the image plane from the pinhole be f. Now, consider a point in the scene moving with velocity (u, v, w) from the starting point (x0, y0, z0). Write the equation for the image coordinates (p, q) at time t. Show that the image point moves along a straight line as t increases.
In: Physics
Using C++
Many software applications use comma-separated values to store and transfer data.
In this program, you are asked to implement the movie_call function that will parse a string of the above structure into the corresponding movie name, rating, and movie length.
ex: In "movie name, rating, length", the movie name is "movie name", the rating is "rating", and the length of the movie is "lenght".
This is the code:
#include <iostream>
#include <string>
using namespace std;
/*
Replace the function body with appropriate statements to movie_call
a string of movie details into its corresponding movie name, rating,
and length.
*/
void movie_call (string movie, string& name, string& rating, string& length) {
int comma, comma1;
comma = movie.find(",");
name = movie.substr(0, comma);
movie = movie.substr(comma + 1);
comma1 = movie.find(",");
rating = movie.substr(0, comma1);
length = movie.substr(comma1 + 1);
}
int main() {
string movie_details;
cout << "Please enter information for one movie of your choice: ";
getline(cin, movie_details);
//Add appropriate statement(s) to call the movie_call function
//and display the name, rating, and length
return 0;
}
In: Computer Science
A planar slab of thickness of 6.00 cm has a uniform volume charge density of 4.20×10-2 C/ m3. Find the magnitude of the electric field at all points in space both inside and outside the slab, in terms of x, the distance measured from the central plane of the slab. What is the field for x = 12.00 cm?
In: Physics
According to the New York Times Article
"Unearthing America's Second Slave Era" please describe the conditions
and circumstances of convict leasing. How does it compare with the
treatment of inmates today.
In: Psychology
In: Computer Science
Research on-line the various ICAO Annexes. Discuss what Standards and Recommended Practices (SARPS) are and how member states comply with SARPS.
In: Operations Management
The home work is to do a survey comparing the following three
programming language:
COBOL , FOTRAN 77, and PASCAL regarding:
1- Character set.
2- Reserved(key) words and special symbols.
3- Simple data types and data structures used.
4- Control structures used (selection and loop
structures)
5- File structure used.
In: Computer Science
Instructions: Choose one of the following leadership authors. Summarize their beliefs about leadership and explain how their principles would be applied in the healthcare environment.. Be sure to also include a description of what parts of their philosophy would NOT suit the healthcare environment.
In: Operations Management
Use tabulated half-cell potentials to calculate ?G?rxn for each of the following reactions at 25 ?C
Pb2+(aq)+Mg(s)?Pb(s)+Mg2+(aq) answer in kJ
Br2(l)+2Cl?(aq)?2Br?(aq)+Cl2(g)
Br2(l)+2Cl?(aq)?2Br?(aq)+Cl2(g)
In: Chemistry
For the two-dimensional, incompressible, irrotational flow, examine the uniform flow and the double flow superposition (flow over the roller).
a) Flow function and velocity potential.
b) Velocity field.
c) Stopping points.
d) Roller surface.
e) Surface pressure distribution.
f) Tensile force on the circular cylinder.
g) Lifting force on the circular cylinder.
In: Mechanical Engineering
What are Erikson's tasks for emerging adulthood and midlife? And what do they mean?
In: Psychology
Suppose that Xtel currently is selling at $54 per share. You buy 450 shares using $10,000 of your own money, borrowing the remainder of the purchase price from your broker. The rate on the margin loan is 7%.
If the maintenance margin is 25%, how low can Xtel’s price fall before you get a margin call? (Round your answer to 2 decimal places.)
How would your answer to (b) change if you had financed the initial purchase with only $12,150 of your own money? (Round your answer to 2 decimal places.)
Continue to assume that a year has passed. How low can Xtel’s price fall before you get a margin call? (Round your answer to 2 decimal places.)
In: Finance
Terminal cash- Various lives and sale prices. Looner Industries is currently analyzing the purchase of a new machine that cost. $164,000 and requires $19,800
in installation costs. Purchase of this machine is expected to result in an increase in net working capital of $30,100 to support the expanded level of operations. The firm plans to depreciate the machine under MACRS using a 5-year recovery period .for the applicable depreciation percentages) and expects to sell the machine to net $10,300 before taxes at the end of its usable life. The firm is subject to a 40 % tax rate.
a. Calculate the terminal cash flow for a usable life of (1) 3 years, (2) 5 years, and (3) 7 years.
b. Discuss the effect of usable life on terminal cash flows using your findings in part a.
c. Assuming a 5-year usable life, calculate the terminal cash flow if the machine were sold to net (1) $9,190 or (2) $169,600 (before taxes) at the end of 5 years.
d. Discuss the effect of sale price on terminal cash flow using your findings in part c.
Rounded Depreciation Percentages by Recovery Year Using MACRS
for First Four Property Classes |
||||
Percentage by recovery year* | ||||
Recovery year | 3 years | 5 years | 7 years | 10 years |
1 | 33% | 20% | 14% | 10% |
2 | 45% | 32% | 25% | 18% |
3 | 15% | 19% | 18% | 14% |
4 | 7% | 12% | 12% | 12% |
5 | 12% | 9% | 9% | |
6 | 5% | 9% | 8% | |
7 | 9% | 7% | ||
8 | 4% | 6% | ||
9 | 6% | |||
10 | 6% | |||
11 | 4% | |||
Totals | 100% | 100% | 100% | 100% |
In: Finance
Which of the following is the key exchange that Eve and Mel might use to simultaneously agree on a large prime number and integer?
A. Quantum Prime
B. Prime-Curve
C. Diffie-Hellman
D. Elliptic Curve Diffie-Hellman
In: Computer Science