|
Non-Smokers (0) |
Smokers (1) |
Overall |
|
|
Sample size |
254 |
72 |
326 |
|
Min |
1587.573 |
1927.768 |
1587.573 |
|
Q1 |
3090.10 |
2863.30 |
3005.05 |
|
Median |
3430.29 |
3203.50 |
3373.59 |
|
Q3 |
3742.14 |
3572.04 |
3685.44 |
|
Max |
4649.322 |
4507.574 |
4649.322 |
|
Mean |
3398.483 |
3190.109 |
3352.462 |
|
Standard Deviation |
515.529 |
521.850 |
523.335 |
Compare the five-number summaries between the two subsamples. Briefly comment on what the summaries reveal about the location, dispersion and skewness of the birth weight distributions in the two subsamples. [2 marks]
It is well-known that, on average, smoking by the mother during
pregnancy lowers the birth weight of the child. To investigate this
claim statistically, you will use a hypothesis test.
Set up the null and alternative hypotheses. Make sure to define your notation clearly. [2 marks]
Verify that the Central Limit Theorem applies. Carry out the hypothesis test using the appropriate methodology, show your steps and state your conclusion. [2 marks]
Does it follow from the hypothesis test that children have lower birth weights because their mothers smoking during pregnancy? Explain. [2 marks]
In: Statistics and Probability
Here is an excerpt from a recent article about the
economy:
For some economists, the danger of inflation starts with the
reckless strategy
of the Federal Reserve to print a massive amount of money out of
thin air in
an attempt to stimulate the economy. These funds haven’t made it
into the
markets and the economy yet, but it is a mathematical certainty
that once
the this money passes through the reserves and hits the markets,
inflation
will increase dramatically.
Use your knowledge of the money supply, inflation and the
Federal Reserve System to explain briefly what these
economists are talking about. What do they mean by
“mathematical certainty”?
In: Economics
In the United States of America, there is wide spread inequality among the people. Rich becomes richer and poor becomes poorer. The reason for this inequality is the economic system that they follows. What economic system do you think United States is following? Identify and explain. Also, evaluate four advantages and disadvantages of this economic system in detail. [Answer in 300 – 400 words]
pls your own words, dont copy from anywhere
In: Economics
Illustrate your understanding of internal controls by providing an example of a control you have personally witnessed (at the gym, supermarket, a restaurant etc.) – do not use a traditional business setting, such as those detailed in your textbook. In your example make sure you cover the following: a. Describe the control in detail (including the setting). b. What was the control trying to achieve (ie. prevent/safeguard)? c. What specific general ledger account could the control be linked to? d. What assertion could the control have been addressing (ie. safeguarding)? e. How could an auditor test the control?
In: Accounting
Illustrate your understanding of internal controls by providing an example of a control you have personally witnessed (at the gym, supermarket, a restaurant etc.) – do not use a traditional business setting, such as those detailed in your textbook. In your example make sure you cover the following:
a. Describe the control in detail (including the setting).
b. What was the control trying to achieve (ie. prevent/safeguard)?
c. What specific general ledger account could the control be linked to?
d. What assertion could the control have been addressing (ie. safeguarding)?
e. How could an auditor test the control?
In: Accounting
Illustrate your understanding of internal controls by providing an example of a control you have personally witnessed (at the gym, supermarket, a restaurant etc.) – do not use a traditional business setting, such as those detailed in your textbook. In your example make sure you cover the following:
a. Describe the control in detail (including the setting).
b. What was the control trying to achieve (ie. prevent/safeguard)?
c. What specific general ledger account could the control be linked to?
d. What assertion could the control have been addressing (ie. safeguarding)?
e. How could an auditor test the control?
In: Accounting
(Airline Reservations System) A small airline has just purchased
a computer for its new automated
reservations system. The president has asked you to program the new
system. You’ll write
a program to assign seats on each flight of the airline’s only
plane (capacity: 10 seats).
Your program should display the following menu of
alternatives:
Please type 1 for "first class"
Please type 2 for "economy"
If the person types 1, then your program should assign a seat in
the first class section (seats 1–
5). If the person types 2, then your program should assign a seat
in the economy section (seats 6–
10). Your program should then print a boarding pass indicating the
person's seat number and
whether it’s in the first class or economy section of the
plane.
Use a single-subscripted array to represent the seating chart of
the plane. Initialize all the elements
of the array to 0 to indicate that all seats are empty. As each
seat is assigned, set the corresponding
element of the array to 1 to indicate that the seat is no longer
available.
Your program should, of course, never assign a seat that has
already been assigned. When the
first class section is full, your program should ask the person if
it’s acceptable to be placed in the
economy section (and vice versa). If yes, then make the appropriate
seat assignment. If no, then
print the message "Next flight leaves in 3 hours."*/
In: Computer Science
(Airline Reservations System) A small airline has just purchased a computer for its new automated reservations system. You’ve been asked to develop the new system. You’re to write an application to assign seats on each flight of the airline’s only plane (capacity: 500 seats).Your application should display the following alternatives: Please type 1 for First Class and Please type 2 for Economy. If the user types 1, your application should assign a seat in the first class section (seats 1–250). If the user types 2, your application should assign a seat in the economy section (seats 250–500). Your application should then display a boarding pass indicating the person’s seat number and whether it’s in the first-class or economy section of the plane. Use a one-dimensional array of primitive type boolean to represent the seating chart of the plane. Initialize all the elements of the array to false to indicate that all the seats are empty. As each seat is assigned, set the corresponding element of the array to true to indicate that the seat is no longer available. Your application should never assign a seat that has already been assigned. When the economy section is full, your application should ask the person if it’s acceptable to be placed in the first-class section (and vice versa). If yes, make the appropriate seat assignment. If no, display the message "Next flight leaves in 3 hours."
For Java
In: Computer Science
For the mtcars dataset (in R), comment on how Rear axle ratio is associated with Displacement (cu.in.) and Miles/(US) gallon using the following steps:
In: Statistics and Probability
Please explain all the financial statements in financial management.
Please explain them in detail and explain their importance.
In: Finance