What is the Reasoning on the case Morgan v. Greenwaldt?

The output of a generator is 440 V at 20 A. It is to be transmitted on a line with resistance of

0.60 ?. To what voltage must the generator output be stepped up with a transformer if the
power loss in transmission is not to exceed 0.010% of the original power?
A) 7.3 kV B) 45 kV C) 22 kV D) 30 kW E) 4.4 kV

Draw graphs using appropriate units and label them. Graphs without labels WILL NOT BE given any points even if the answer is correct. Explain clearly wherever asked.

1. Exercise on quantity equation and AD curve

1. Assume money supply is fixed at M=1000 and the velocity of money V=2.0, complete the table 1

2. Draw the AD curve that results from the table results and label as AD₁

c. What does the AD curve denote?

   d. Suppose the money supply increases to 1500 while velocity remains equal to 2.0, complete the table 2 below (use the price level from the previous table 1)

   e. Plot the AD curve with the data from Table 2 and label the curve as AD₂ (when M=1500 and V=2.0)

f. Suppose if the money supply remained at its original level of 1000 but the velocity increases to 3.0, how does it affect the AD curve?

   g. Suppose if the money supply fell to 500 while velocity remained equal to 2.0, complete the following table 3

   h. Plot the AD curve with data from Table 3 and label the curve as AD₃ (when M=500 and V=2.0)

   I. Plot the AD curve with data from Table 3 and label the curve as AD₃ (when M=500 and V=2.0)

Question #: 15
BACKGROUND: Seizure is a common complication after stroke (termed "post-stroke seizure," PSS). Although many studies have assessed outcomes and risk factors of PSS, no reliable predictors are currently available to determine PSS recurrence. We compared baseline clinical characteristics and post- stroke treatment regimens between recurrent and non-recurrent PSS patients to identify factors predictive of recurrence.
METHODS: Consecutive PSS patients admitted to our stroke center between January 2011 and July 2013 were monitored until February 2014 (median 357 days; IQR, 160-552) and retrospectively evaluated for baseline clinical characteristics and PSS recurrence. Cumulative recurrence rates at 90, 180, and 360 days post-stroke were estimated by Kaplan-Meier analysis. Independent predictors of recurrent PSS were identified by Cox proportional-hazards analysis.
RESULTS: A total of 104 patients (71 men; mean age, 72.1 ±11.2 years) were analyzed. PSS recurred in 31 patients (30%) during the follow-up. Factors significantly associated with PSS recurrence by log-rank analysis included previous PSS, valproic acid (VPA) monotherapy, polytherapy with antiepileptic drugs (AEDs), frontal cortical lesion, and higher modified Rankin Scale score at discharge (all p <0.05). Independent predictors of recurrent PSS were age <74 years (HR 2.38, 95% CI 1.02-5.90), VPA monotherapy (HR 3.86, 95% CI 1.30-12.62), and convulsions on admission (HR 3.87, 95% CI 1.35-12.76). CONCLUSIONS: Approximately one-third of PSS patients experienced seizure recurrence within one year. The predictors of recurrent PSS were younger age, presence of convulsions and VPA monotherapy. Our findings should be interpreted cautiously in countries where monotherapy with second-generation AEDs has been approved because this study was conducted while second-generation AEDs had not been officially approved for monotherapy in Japan.
Which of the following choices best represents the study design? (2 points)
A. Prospective Cohort Study
B. Retrospective Cohort Study
C. Case-Control Study
D. Case Report / Case Series
E. Cross-Sectional Study
F. Prospective, Randomized, Controlled Study

Using a vector of integers that you define.

Write a C++ program to run a menu driven program with the following choices:

1) Display the ages
2) Add an age
3) Display the average age
4) Display the youngest age
5) Display the number of students who can vote
6) Remove all students less than a given age
7) Quit

Make sure your program conforms to the following requirements:

2. Write a function called getValidAge that allows a user to enter in an integer and loops until a valid number that is >= 0 and < 120 is entered. It returns the valid age. (5 points).

3. Write a function called displayAges that takes in a vector of integers as a parameter and displays the ages in the format in the sample run below. (10 points).

4. Write a function called AddAge that takes in a vector of integers by reference as a parameter, asks the user to input a valid age, and adds it to the vector of integers . (15 points).

5. Write a function called getAverageAge that takes in a vector of integers as a parameter, computes, and returns the average age. (15 points).

6. Write a function called getYoungestAge that takes in a vector of integers as a parameter, computes, and returns the youngest age. (15 points).

7. Write a function called getNumStudentsVote that takes in a vector of integers as a parameter, computes, and returns the number of ages in the vector that are >= 18. (15 points).

8. Write a function called RemoveStudentsLessThanSelectedAge that takes in a vector of integers as a parameter, asks the user for an age, creates a new vector of integers that only contains the ages in the parameter vector which are >= the age selected by the user and returns the new vector. (20 points).

9. Add comments wherever necessary. (5 points)

NOTE: You must take care of the case when the vector is empty and an operation is being performed on it. In such cases the program should display a 0 for the given result.

Sample Runs:

NOTE: not all possible runs are shown below.

Welcome to the students age in class program!
1) Display the ages
2) Add an age
3) Display the average age
4) Display the youngest age
5) Display the number of students who can vote
6) Remove all students less than a given age
7) Quit
Select an option (1..7)..1
Student ages:

1) Display the ages
2) Add an age
3) Display the average age
4) Display the youngest age
5) Display the number of students who can vote
6) Remove all students less than a given age
7) Quit
Select an option (1..7)..3
Average age = 0
1) Display the ages
2) Add an age
3) Display the average age
4) Display the youngest age
5) Display the number of students who can vote
6) Remove all students less than a given age
7) Quit
Select an option (1..7)..4
Youngest age = 0
1) Display the ages
2) Add an age
3) Display the average age
4) Display the youngest age
5) Display the number of students who can vote
6) Remove all students less than a given age
7) Quit
Select an option (1..7)..5
Number of students who can vote = 0
1) Display the ages
2) Add an age
3) Display the average age
4) Display the youngest age
5) Display the number of students who can vote
6) Remove all students less than a given age
7) Quit
Select an option (1..7)..6
Please enter in the age...
5
Students removed
1) Display the ages
2) Add an age
3) Display the average age
4) Display the youngest age
5) Display the number of students who can vote
6) Remove all students less than a given age
7) Quit
Select an option (1..7)..2
Please enter in the age...
4
Age added
1) Display the ages
2) Add an age
3) Display the average age
4) Display the youngest age
5) Display the number of students who can vote
6) Remove all students less than a given age
7) Quit
Select an option (1..7)..2
Please enter in the age...
24
Age added
1) Display the ages
2) Add an age
3) Display the average age
4) Display the youngest age
5) Display the number of students who can vote
6) Remove all students less than a given age
7) Quit
Select an option (1..7)..2
Please enter in the age...
18
Age added
1) Display the ages
2) Add an age
3) Display the average age
4) Display the youngest age
5) Display the number of students who can vote
6) Remove all students less than a given age
7) Quit
Select an option (1..7)..2
Please enter in the age...
12
Age added
1) Display the ages
2) Add an age
3) Display the average age
4) Display the youngest age
5) Display the number of students who can vote
6) Remove all students less than a given age
7) Quit
Select an option (1..7)..1
Student ages:
4 24 18 12
1) Display the ages
2) Add an age
3) Display the average age
4) Display the youngest age
5) Display the number of students who can vote
6) Remove all students less than a given age
7) Quit
Select an option (1..7)..3
Average age = 14
1) Display the ages
2) Add an age
3) Display the average age
4) Display the youngest age
5) Display the number of students who can vote
6) Remove all students less than a given age
7) Quit
Select an option (1..7)..4
Youngest age = 4
1) Display the ages
2) Add an age
3) Display the average age
4) Display the youngest age
5) Display the number of students who can vote
6) Remove all students less than a given age
7) Quit
Select an option (1..7)..5
Number of students who can vote = 2
1) Display the ages
2) Add an age
3) Display the average age
4) Display the youngest age
5) Display the number of students who can vote
6) Remove all students less than a given age
7) Quit
Select an option (1..7)..6
Please enter in the age...
15
Students removed
1) Display the ages
2) Add an age
3) Display the average age
4) Display the youngest age
5) Display the number of students who can vote
6) Remove all students less than a given age
7) Quit
Select an option (1..7)..1
Student ages:
24 18
1) Display the ages
2) Add an age
3) Display the average age
4) Display the youngest age
5) Display the number of students who can vote
6) Remove all students less than a given age
7) Quit
Select an option (1..7)..3
Average age = 21
1) Display the ages
2) Add an age
3) Display the average age
4) Display the youngest age
5) Display the number of students who can vote
6) Remove all students less than a given age
7) Quit
Select an option (1..7)..4
Youngest age = 18
1) Display the ages
2) Add an age
3) Display the average age
4) Display the youngest age
5) Display the number of students who can vote
6) Remove all students less than a given age
7) Quit
Select an option (1..7)..5
Number of students who can vote = 2
1) Display the ages
2) Add an age
3) Display the average age
4) Display the youngest age
5) Display the number of students who can vote
6) Remove all students less than a given age
7) Quit
Select an option (1..7)..-8
Select an option (1..7)..8
Select an option (1..7)..1
Student ages:
24 18
1) Display the ages
2) Add an age
3) Display the average age
4) Display the youngest age
5) Display the number of students who can vote
6) Remove all students less than a given age
7) Quit
Select an option (1..7)..2
Please enter in the age...
-8
Please enter in a valid age (1-120) ...
130
Please enter in a valid age (1-120) ...
55
Age added
1) Display the ages
2) Add an age
3) Display the average age
4) Display the youngest age
5) Display the number of students who can vote
6) Remove all students less than a given age
7) Quit
Select an option (1..7)..1
Student ages:
24 18 55
1) Display the ages
2) Add an age
3) Display the average age
4) Display the youngest age
5) Display the number of students who can vote
6) Remove all students less than a given age
7) Quit
Select an option (1..7)..7

Process finished with exit code 0

Purpose:

• To create and interpret confidence intervals for the population proportion or population mean.

• To do hypothesis testing on a population proportion or population mean. Due Date: Nov 27, 2018 at the beginning of class.

What you must deliver:

1. Formulate a statistical hypothesis. 2. Develop a data production strategy. 3. Collect sample data. 4. Solutions to the questions (See below). 5. Reflection.

Suggested ideas to consider:

• Proportion of students at Cañada College who can raise one eyebrow without raising the other eyebrow.

• Mean age of cars driven by (statistics) students and/or mean age of cars driven by faculty.

• Proportion of students at Cañada College who can correctly identify the President, the Vice President, and the Secretary of State.

• Proportion of students at Cañada College who are over the age of 18 and are registered to vote.

• Mean age of evening class student at Cañada College

. • Proportion of student cars that are (white).

• Mean number of hours that students work at Cañada College each week.

• Mean age of books (based on copyright dates) from the library.

• Proportion of books that are over years from the library.

• Proportion of pages of a sample of different issues that contain advertising

GRADING RUBRIC: Total Score (50) 1. Collect sample data. (5 points) 2. Solutions to the questions (40 points Total) - Summary of data (5) - Compute margin of error correctly (5) - Compute confidence interval correctly (10) - Perform the hypothesis test correctly (15) - Interpret the result of the test correctly (5) 3. Reflection. (5 points)

Explore your own Data Set.

1.Select a research question from the given list, or make up your own question

. Write down the question selected

. 2. Decide whether you would use the point estimate for population mean or population proportion.

Describe the population you are targeting.

3. Collect the data. Collect a minimum of 31 sample data. Proper data collection methods (i.e. randomization) should be used if possible. If proper methods cannot be used, then this must be acknowledged and the reasoning for using the less than proper methods explained. Describe how you obtain your data in 3-5 sentences.

4. Summarize the data. Use additional pages if necessary. a. You must provide ALL of your sample data based on the topic you choose. b. Identify �, �̂, �, and/or �̅where appropriate. c. List the sample size and determine the necessary data values to do the calculation. Use the correct variables. d. Find the 75%, 95%, and 99% confidence intervals. (Do all three) e. Determine the Margin of Error for the 75%, 95%, and 99% confidence intervals.

5. Interpret the results of the confidence interval.

6. Hypothesis Testing. a. Formulate your statistical claim against a population proportion or a population mean. (i.e. Less than 30% of the students at Cañada College…..) b. Show the seven steps to your hypothesis testing and its result. c. Identify which test (left-tail, right-tail, two-tail), which distribution (z-Test statistics or t-Test statistics), and which method (Critical Value Method or P-Value Method) you used. d. Supply all necessary work with diagrams.

7. Interpret the results of the hypothesis testing. STEPS 1-7 can be hand-written, in a legible manner.

8. Reflection: Each student must write up a half-page to one-page reflection, typed, choosing three of the following questions

. a. What were your overall thoughts about this project? Explain any surprises.

b. How did this project help you understand statistics better?

c. Do you feel you worked as efficiently as possible? What can you do to improve your efficiency?

d. Explain how this project is relevant to something you have experienced or seen in the real world?

1. A sample of 152 statistics students were surveyed concerning their future pet ownership. Of the 152 students in the sample, 82 responded that they plan on getting a dog after graduating.
   1. Construct a 95% confidence interval for the proportion of statistics students overall (i.e., the entirepopulation) that want to get a dog.
   2. Suppose we wanted to take another sample to estimate the percent of percentage of statistics students that want to get a dog. Find the sample size we need to estimate the percent of percentage of statistics students that want to get a dog. Use the estimate from the sample for the sample proportion, a margin of error of 4% and a confidence level of 99%.

**how to on the calculator

please show work

3. Students taking Professor’s Angela Mazza’s Introduction to Marketing course spent an average of 1.5 hours to complete an assignment with a standard deviation of 0.40 hours and it follows the normal probability distribution.

(a) Find the portion of the students who spent between 1.5 and 2.5 hours to complete an assignment.

(b) Find the portion of the students who spent more than 2.5 hours to complete an assignment.

(c) Find the portion of the students who spent between 2.5 and 2.7 hours to complete an assignment.

(d) Find the portion of the students who spent between 1 and 2.7 hours to complete an assignment.

You know that the height of all Sy Syms students is normal with a mean of 69 inches and a standard deviation of 3 inches.
a) What proportion of all Sy Syms students have a height between 68 and 70.5 inches?
b) What is the 95th (and 99th) percentile of all Sy Syms students’ heights?
c) If you took a sample of 25 Sy Syms students and measured their heights, what would you expect the average, variance and standard deviation of all possible sample means to be?
d) What is the probability that the sample mean height of the 25 Sy Syms students is between 68 and 70.5 inches?

To approximate the proportion p of out-of-state students at University A, n samples are taken in a survey.

(1) Find the mean and standard deviation of sample proportion p̂.

(2) A survey shows that there are 23 out-of-state students out of 100 students. Find the 95% confidence interval for p.

(3) If we require the estimating error is less than 3% with 95% confidence, how many samples are required at least?

(4) Another sample shows that there are 10 out-of-state students out of 50 students from University B. Find the 95% confidence interval for the difference of two proportions between Universities A and B.