In a study of high-achieving high school graduates, the authors
of a report surveyed 834 high school graduates who were considered
"academic superstars" and 436 graduates who were considered "solid
performers." One question on the survey asked the distance from
their home to the college they attended.
Assuming it is reasonable to regard these two samples as random
samples of academic superstars and solid performers nationwide, use
the accompanying data to determine if it is reasonable to conclude
that the distribution of responses over the distance from home
categories is not the same for academic superstars and solid
performers. Use
α = 0.05.
| Distance of College from Home (in miles) | |||||
|---|---|---|---|---|---|
| Student Group | Less than 40 |
40 to 99 |
100 to 199 |
200 to 399 |
400 or More |
| Academic Superstars | 158 | 157 | 143 | 150 | 226 |
| Solid Performers | 105 | 94 | 83 | 65 | 89 |
State the null and alternative hypotheses.
H0: Student group and distance of college
from home are independent.
Ha: Student group and distance of
college from home are not independent. H0:
Student group and distance of college from home are not
independent.
Ha: Student group and distance of
college from home are independent.
H0: The proportions falling into the distance
categories are not all the same for the two student groups.
Ha: The proportions falling into the
distance categories are the same for the two student groups.
H0: The proportions falling into the distance
categories are the same for the two student groups.
Ha: The proportions falling into the
distance categories are not all the same for the two student
groups.
Calculate the test statistic. (Round your answer to two decimal
places.)
χ2 =
What is the P-value for the test? (Round your answer to
four decimal places.)
P-value =
What can you conclude?
Do not reject H0. There is not enough evidence to conclude that the proportions falling into the distance categories are not all the same for the two student groups. Reject H0. There is convincing evidence to conclude that the proportions falling into the distance categories are not all the same for the two student groups. Reject H0. There is convincing evidence to conclude that there is an association between student group and distance of college from home. Do not reject H0. There is not enough evidence to conclude that there is an association between student group and distance of college from home.
In: Math
Circle the cause/effect structure. Underline the
causes and double underline the effects.
1. Based at years of scientific data, the majority of climate
scientists now support the idea that climate change is a result of
human activity.
2. One effect of a mother’s heavy alcohol during
pregnancy is a baby born with low birthweight.
3. Bullying, which can be defined as the use of violent
actions and / or threatening language to cause physical, social, or
psychological harm, is a common cause of depression, social
isolation, and low school performance in middle school
students.
4. The theory of Natural Selection states that organisms change as
a response to changes in their environment.
5. Regular visits to green spaces such as parks, forests, and rural
areas have a positive effect on people’s moods.
6. Strong academic performance in elementary school is often
attributed to the parents’ readiness to help their children with
homework.
7. The overall health of a nation is directly linked to the health
of the population. Therefore, governments need to take measures to
ensure the people are healthy.
8. Because of extensive time living in China, some native speakers
of English are highly proficient in Chinese.
9. Early voter registration usually results in better voter
turnout.
10. Wet environments and hot weather are two factors that
contribute to insect-borne illnesses.
In: Nursing
Circle the cause/effect structure. Underline the
causes and double underline the effects.
1. Based at years of scientific data, the majority of climate
scientists now support the idea that climate change is a result of
human activity.
2. One effect of a mother’s heavy alcohol during
pregnancy is a baby born with low birthweight.
3. Bullying, which can be defined as the use of violent
actions and / or threatening language to cause physical, social, or
psychological harm, is a common cause of depression, social
isolation, and low school performance in middle school
students.
4. The theory of Natural Selection states that organisms change as
a response to changes in their environment.
5. Regular visits to green spaces such as parks, forests, and rural
areas have a positive effect on people’s moods.
6. Strong academic performance in elementary school is often
attributed to the parents’ readiness to help their children with
homework.
7. The overall health of a nation is directly linked to the health
of the population. Therefore, governments need to take measures to
ensure the people are healthy.
8. Because of extensive time living in China, some native speakers
of English are highly proficient in Chinese.
9. Early voter registration usually results in better voter
turnout.
10. Wet environments and hot weather are two factors that
contribute to insect-borne illnesses.
In: Nursing
can You please write the paragraph bellow in your own words and with academic and easy words
Methodology for employee retention can be broadly divided in following steps-
1 Identifying the critical & early warning signals of talents before exit - Purpose to ensure the critical positions which have direct impact on client or output are being identified. As well evaluation done by supervisor or manager to capture early warning signals.
2. Quantify the risk associated with the exit of particular person, & assess what is objective (motivation), weakness & strength of particular individual
3.Basis particular case profile, suggest suitable actions for instance- Female employees not comfortable in night shift due to no travel provided by company and locality is not safe for females employees in night. On discussion with female employees, it was suggested either to provide company sponsored cab services for pick up or drop.
4. Take actions on agreed points - discuss with relevant authorities about case, and advantages of retention of particular employee. As well potential assessment, how it would positively motivate other employees as well
5. Evaluate on strategic basis whether what are changes can be done which will make employees to associate with organization, making their job more enjoyable and provides their comprehensive development on functional as well personal basis
In: Economics
In: Economics
6. Consider the one dimensional wave equation with boundary conditions and initial conditions:
PDE : utt = c 2 uxx, BC : u(0, t) = u(L, t) = 0, IC : u(x, 0) = f(x), ut(x, 0) = g(x)
a) Suppose c = 1, L = 1, f(x) = 180x 2 (1 − x), and g(x) = 0. Using the first 10 terms in the series, plot the solution surface and enough time snapshots to display the dynamics of the solution
b) What happens to the solution as t → ∞? Explain your answer in light of (a) and the physical interpretation of the problem. Does (b) reflect this?
c) Redo parts (a) and (b) for c = 1, L = π, f(x) = 2 sin 3x, and g(x) = 1 − x.
In: Advanced Math
Construction Management and Site Management can be treated as two separate entities although with a very fine and at times obscure line dividing them.
Summarise to what extent the above statement is valid. Your discussion should specifically interpret and apply the above statement in the context of a large commercial construction project in the UK and distinguish the similarities and differences in the two roles and the duties discharged. Your arguments can be supported with practical examples, diagrams, etc.
In: Civil Engineering
Hypothecation taxation has been discussed as one way of improving the public’s perception and acceptance of new taxes and tax increases in particular with regards to “green taxes”.
YOU ARE REQUIRED TO:
In: Finance
Description For this part of the assignment, you will create a Grid representing the pacman’s game grid by using a 2D array of Strings as shown in Section 1. Also, you will design the functionality of the pacman as described in Section 2 and represent it in the grid. 1 The Grid The dimensions of the grid is 15 x 15 and the gird is composed of 4 boundaries: north, south, east, and west boundaries as shown in the Figure. The grid has the following characteristics: 1. The boundaries are represented with “X”, and this will block the pacman. 2. There may be obstacles that obstruct the pacman’s movement. 3. There are 4 gates represented with “ ”, and these gates communicates with the opposite gate. E.g., the north gate communicates with the south gate, and the east gate communicates with the west. This means that if the pacman is located in the north gate, next time it moves up will appear in the south gate, similar with the east and west gate. 4. The grid contains cookies represented with “.”. The idea is to collect all the cookies from the grid in order to win the game. Every time the the pacman eats a cookie, the cookie disappears. The Grid has the following fields • grid: is a 2D array of Strings • x-pos: the x-coordinate where the pacman is located • y-pos: the y-coordinate where the pacman is located • counter: a counter that represents the total number of cookies consumed by the pacman In addition, the Grid has the following methods: • initializeGrid(): This method will print a “fresh” new grid with the pacman located in the middle of the grid and the rest of the grid will contain cookies “.”. Except the boundaries of the grid. Your maze shall have four boundaries i.e., north, south, east, and west. The boundaries are represented with an “X”. Each boundary has a gate in the middle that allows the pacman to communicate to the opposite gate. • updateGrid(): will happen after the selection of moving “a”,“s”,“d” or “w” is done. Since these four options will move to west, south, east, or north, then you need to “update” the grid. The way to do this is by passing the x-coordinate and the y-coordinate as arguments to this method. The method then, will update the new position of the pacman (that is, the x and y coordinate from the arguments). Here is where the previous x and y position of the pacman will “disappear” (which is now a blank space “ ”). This method will reflect the new position of the pacman in the grid in case it moved. This method will also reflect the number of cookies consumed. • checkBoundaries(): Before moving the pacman to the new position, this method will check if is possible according the current coordinates. In case is a valid movement, the method will return true. In case the movement is invalid, due to a boundary or through something else, then your method will return false. The Pacman The pacman has the following characteristics: • The pacman has the ability to move through the gates (i.e., north to south, east to west). • The maze is full of cookies (e.g., “.”). The pacman must eat all the cookies to finish the game. Every time the pacman eats a cookie, it disappears from the maze the counter increases by 1. • If pacman movesUp by typing the key w, the pacman’s y-coordinate must increase by one unit. If the pacman’s y-coordinate exceeds the maze’s upper boundary, then the pacman’s y-coordinate AND the maze’s position shall not be updated. • If pacman movesDown by typing the key s, the pacman’s y-coordinate must decrease by one unit. If the pacman’s y-coordinate exceeds the maze’s lower boundary, then the pacman’s y-coordinate AND the maze’s position shall not be updated. • If pacman movesRight, by typing the key d, the pacman’s x-coordinate must increase by one unit. If the pacman’s x-coordinate exceeds the maze’s right boundary, then the pacman’s x-coordinate AND the maze’s position shall not be updated. • If pacman movesLeft, by typing the key a, the pacman’s x-coordinate must decrease by one unit. If the pacman’s x-coordinate exceeds the maze’s left boundary, then the pacman’s x-coordinate AND the maze’s position shall not be updated. Notice that by moving through the y-coordinate the program deals with the rows of the array, similar when dealing with the x-coordinate, the program deals with the columns of array. 3 The Game Engine In order to simulate a game, you must have an engine that keeps looping the position. This is exactly what happens in the old movie theater when they have the 35mm projectors. Here, we will simulate the same idea with a loop: 1. import java.util.Scanner; 2. public class Engine{ 3. public static void main(String [] args){ 4. String[][] grid = new String[10][10]; 5. int col = 5; 6. initializeGrid(grid); 7. grid[5][col] = "P"; 8. Scanner input = new Scanner(System.in); 9. while(true){ 10. print(grid); 11. String option = input.nextLine(); 12. if(option.equals("d")){ 13. // code goes here 14. } 15. // more code goes here 16. } 17. } 18. // methods go here 19. } In Line 4, will create a grid of 10 x 10 of Strings. In Line 7 will store the pacman (’P’) in the middle of the maze. In Line 9 will allow to run your program “forever” until you decide to finish your program. Line 11 will wait for the input from the user to move the pacman (i.e., “a”, “s”, “d”, or “w”). A complete engine can be found in Grid.java.
In: Computer Science
ABC Company in southwest UK manufactures leather lacing and kits. It consists of 5 Leather Factory stores of, which three are located in the UK and others are located in Europe. Recently the overall demand for its products has declined. Therefore, intermediate-term attempts to control costs have centered on forecasting demand and reducing inventory costs. To help ABC Company better manage its resources and more effectively respond to demand, management team is considering ways to improve its planning process by finding demand/inventory management methods that can reasonably predict demand six to eight weeks into the future, and establishing procedures for managing inventory costs.
Could the answer please be presented in report style, the question is worth 15% of a level 6 report with around 300-400 words maximum. Please do not simply copy and paste from google or a negative review will follow. Positive review will be received for quality answers, thanks in advance
In: Finance