In the High School there is around 2500 students, 18% of the students smoke cigarettes.
A) If 2 are selected at random, use a Venn diagram with 2 circles; 1 representing the probability that the first student smokes and 1 representing the probability that the other student smokes. Determine the probability that at least 1 of them smokes cigarettes. (This would be equivalent to the probability that either the first student OR the second student smokes.)
B) Repeat the above analysis when 3 students are selected at random.
Note: These trials would be independent given the large population of students.
In: Statistics and Probability
A school states that average tuition of their training program for various certifications taught there is $995 with a standard deviation of $100. You are not sure which course to take and just decided to enroll in a certificate course at random.
What is the probability that the tuition for the course is between $900 and $1050?
You plan to register for 9 certifications. What is the probability that the average price of certifications is between $900 and $1050?
In: Statistics and Probability
A school states that average tuition of their training program for various certifications taught there is $995 with a standard deviation of $100. You are not sure which course to take and just decided to enroll in a certificate course at random.
What is the probability that the tuition for the course is between $900 and $1050?
You plan to register for 9 certifications. What is the probability that the average price of certifications is between $900 and $1050?
In: Statistics and Probability
The Mercantilist and Physiocratic economic schools of thought are the earliest recognizable school of thought in human history.
a) Identify a similarity and a difference between those schools
of thought.
Your answer needs to provide at least two paragraphs.
The first paragraph discusses the similarity between these schools
of thought.
The second paragraph discusses the difference between these schools
of thought.
b) Discuss the economic idea or thought that you have found the most interesting from any of these schools of thought or their thinkers. Explain your reasoning.
c) Identify a local/global problem or a positive aspect in current societies that might be caused by an economic policy that is based on an economic concept that was originally identified by the Physiocrat School of Thought.
Your answer needs to provide at least two paragraphs.
The first paragraph discusses the local/global problem or a
positive aspect in current societies.
The second paragraph explains how the concept that you identified
is causing the problem or the positive aspect.
Answer all the questions in well developed paragraphs. The paragraphs should be at least five or six sentences long, and they should clearly include a topic sentence.
In: Economics
In: Finance
The Dean of the Business School at State University would like to test the hypothesis that no difference exists between the average final exam grades for the Introduction to Marketing course and the Introduction to Finance course. A random sample of eight students who took both courses was selected and their final exam grades for each course are attached below below. Assume Population 1 is defined as the Marketing exam scores and Population 2 is defined as the Finance exam scores. Using a=0.05, determine the conclusion for this hypothesis test.
Please give me the very clear explanation, thank you :)
|
Student |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
|---|---|---|---|---|---|---|---|---|
|
Marketing |
82 |
86 |
74 |
93 |
90 |
76 |
87 |
100 |
|
Finance |
76 |
91 |
70 |
79 |
96 |
70 |
85 |
81 |
A.
Because the test statistic is less than the critical value, we can conclude that no difference exists between the average final exam grades for the Introduction to Marketing course and the Introduction to Finance course.
B.
Because the test statistic is more than the critical value, we cannot conclude that a difference exists between the average final exam grades for the Introduction to Marketing course and the Introduction to Finance course.
C.
Because the test statistic is less than the critical value, we cannot conclude that a difference exists between the average final exam grades for the Introduction to Marketing course and the Introduction to Finance course.
D.
Because the test statistic is more than the critical value, we can conclude that a difference exists between the average final exam grades for the Introduction to Marketing course and the Introduction to Finance course.
In: Statistics and Probability
The Dean of the Business School at State University would like to test the hypothesis that no difference exists between the average final exam grades for the Introduction to Marketing course and the Introduction to Finance course. A random sample of eight students who took both courses was selected and their final exam grades for each course are shown below. Assume Population 1 is defined as the Marketing exam scores and Population 2 is defined as the Finance exam scores. Which one of the following statements is true?
|
Student |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
|---|---|---|---|---|---|---|---|---|
|
Marketing |
82 |
86 |
74 |
93 |
90 |
76 |
87 |
100 |
|
Finance |
76 |
91 |
70 |
79 |
96 |
70 |
85 |
81 |
A.
Because the 95% confidence interval includes zero, we can conclude that no difference exists between the average final exam grades for the Introduction to Marketing course and the Introduction to Finance course.
B.
Because the 95% confidence interval does include zero, we cannot conclude that a difference exists between the average final exam grades for the Introduction to Marketing course and the Introduction to Finance course.
C.
Because the 95% confidence interval includes zero, we cannot conclude that no difference exists between the average final exam grades for the Introduction to Marketing course and the Introduction to Finance course.
D.
Because the 95% confidence interval does not include zero, we can conclude that a difference exists between the average final exam grades for the Introduction to Marketing course and the Introduction to Finance course.
In: Statistics and Probability
At the beginning of the school year, Priscilla Wescott decided to prepare a cash budget for the months of September, October, November, and December. The budget must plan for enough cash on December 31 to pay the spring semester tuition, which is the same as the fall tuition. The following information relates to the budget:
| Cash balance, September 1 (from a summer job) | $6,680 |
| Purchase season football tickets in September | 90 |
| Additional entertainment for each month | 230 |
| Pay fall semester tuition in September | 3,600 |
| Pay rent at the beginning of each month | 320 |
| Pay for food each month | 180 |
| Pay apartment deposit on September 2 (to be returned December 15) | 500 |
| Part-time job earnings each month (net of taxes) | 830 |
a. Prepare a cash budget for September, October, November, and December. Enter all amounts as positive values except cash decrease which should be indicated with a minus sign.
| Priscilla Wescott | ||||
| Cash Budget | ||||
| For the Four Months Ending December 31 | ||||
| September | October | November | December | |
| Estimated cash receipts from: | ||||
| $ | $ | $ | $ | |
| Total cash receipts | $ | $ | $ | $ |
| Less estimated cash payments for: | ||||
| $ | ||||
| $ | $ | $ | ||
| Total cash payments | $ | $ | $ | $ |
| Cash increase (decrease) | $ | $ | $ | $ |
| Cash balance at end of month | $ | $ | $ | $ |
b. Are the four monthly budgets that are
presented prepared as static budgets or flexible budgets?
c. What are the budget implications for Priscilla Wescott?
Priscilla can see that her present plan sufficient cash. If Priscilla did not budget but went ahead with the original plan, she would be $ at the end of December, with no time left to adjust.
In: Accounting
At the beginning of the school year, Priscilla Wescott decided to prepare a cash budget for the months of September, October, November, and December. The budget must plan for enough cash on December 31 to pay the spring semester tuition, which is the same as the fall tuition. The following information relates to the budget:
| Cash balance, September 1 (from a summer job) | $6,680 |
| Purchase season football tickets in September | 90 |
| Additional entertainment for each month | 230 |
| Pay fall semester tuition in September | 3,600 |
| Pay rent at the beginning of each month | 320 |
| Pay for food each month | 180 |
| Pay apartment deposit on September 2 (to be returned December 15) | 500 |
| Part-time job earnings each month (net of taxes) | 830 |
a. Prepare a cash budget for September, October, November, and December. Enter all amounts as positive values except cash decrease which should be indicated with a minus sign.
| Priscilla Wescott | ||||
| Cash Budget | ||||
| For the Four Months Ending December 31 | ||||
| September | October | November | December | |
| Estimated cash receipts from: | ||||
| $ | $ | $ | $ | |
| Total cash receipts | $ | $ | $ | $ |
| Less estimated cash payments for: | ||||
| $ | ||||
| $ | $ | $ | ||
| Total cash payments | $ | $ | $ | $ |
| Cash increase (decrease) | $ | $ | $ | $ |
| Cash balance at end of month | $ | $ | $ | $ |
b. Are the four monthly budgets that are
presented prepared as static budgets or flexible budgets?
c. What are the budget implications for Priscilla Wescott?
Priscilla can see that her present plan sufficient cash. If Priscilla did not budget but went ahead with the original plan, she would be $ at the end of December, with no time left to adjust.
In: Accounting
Children playing in a playground on the flat roof of a city school lose their ball to the parking lot below. One of the teachers kicks the ball back up to the children as shown in the figure below. The playground is 5.50 m above the parking lot, and the school building's vertical wall is
h = 6.90 m
high, forming a 1.40 m high railing around the playground. The ball is launched at an angle of
θ = 53.0°
above the horizontal at a point
d = 24.0 m
from the base of the building wall. The ball takes 2.20 s to reach a point vertically above the wall. (Due to the nature of this problem, do not use rounded intermediate values in your calculations—including answers submitted in WebAssign.)
a) Find the speed (in m/s) at which the ball was launched.
(b) Find the vertical distance (in m) by which the ball clears the wall.
(c)Find the horizontal distance (in m) from the wall to the point on the roof where the ball lands.
(d)What If? If the teacher always launches the ball with the speed found in part (a), what is the minimum angle (in degrees above the horizontal) at which he can launch the ball and still clear the playground railing? (Hint: You may need to use the trigonometric identity
sec2(θ) = 1 + tan2(θ).)
(e)What would be the horizontal distance (in m) from the wall to the point on the roof where the ball lands in this case?
In: Physics