Questions
The following table is based on a random sample conducted of high school seniors and their...

  1. The following table is based on a random sample conducted of high school seniors and their parents by Jennings and Niemi, in which they explore the party identification of parents and their children.

Student Party Identification

Parent Party ID

Democrat

Independent

Republican

Democrat

604

245

67

Independent

130

235

76

Republican

63

180

252

  1. What is the percentage of students who share the same party identification as their parents? (Show the computation.)
  2. What percentage of Democrat parents have Republican children?
  3. Based on these data, can we say if the relationship is causal? Explain your answer.
  4. Suppose you were exploring the hypothesis that there is a relationship between parents’ and children’s party identification. Would we be correct in inferring that such a relationship also exists in the population? Explain your answer. What is the probability that any relationship we found is due to pure chance?

In: Math

A business school conducted a survey of companies in its state. They mailed a questionnaire to...

A business school conducted a survey of companies in its state. They mailed a questionnaire to 200 small companies, 200 medium-sized companies and 200 large companies. The rate of nonresponse is important in deciding how reliable survey results are. Here are the data:

Small              Medium           Large
Response             125                       81                40
No response          75                      119              160

What is the overall rate of nonresponse? If response rate is not related to size of company, you would expect all companies, regardless of size, to have a similar response rate.

In: Math

Please create a c++ program that will ask a high school group that is made of...

Please create a c++ program that will ask a high school group that is made of 5 to 17 students to sell candies for a fund raiser. There are small boxes that sell for $7 and large ones that sell for $13. The cost for each box is $4 (small box) and $6 (large box). Please ask the instructor how many students ended up participating in the sales drive (must be between 5 and 17). The instructor must input each student’s First name that sold items and enter the number of each box sold each (small or large). Calculate the total profit for each student and at the end of the program, print how many students participated and the total boxes sold for each (small and large) and finally generate how much profit the group made. (15 points)

In: Computer Science

FCAT scores and poverty. In the state of Florida, elementary school performance is based on the...

FCAT scores and poverty. In the state of Florida, elementary school performance is based on the average score obtained by students on a standardized exam, called the Florida Comprehensive Assessment Test (FCAT). An analysis of the link between FCAT scores and sociodemographic factors was published in the Journal of Educational and Behavioral Statistics (Spring 2004). Data on average math and reading FCAT scores of third graders, as well as the percentage of students below the poverty level, for a sample of 22 Florida elementary schools are summarized by the number given below. (x= percentage of students below poverty level, and y=math score ) n = 22 ??xi = 1292.7 ??yi = 3781.1 ??x2i =88668 ??yi2 =651612 ??xiyi =218292 (a) Propose a straight-line model relating math-score to percentage of students below poverty level. (b) Find the least-squares regression line fitting the model to the data. (c) Interpret the estimates for intercept and slope in the context of the problem. (d) Test whether the math score is negatively related to the percentage of students below the poverty level. (e) Construct a 99% confidence interval for the slope of the model, and interpret your result in the context of the problem.

In: Math

A student studying in medical school, according to the body structure of a person with high...

A student studying in medical school, according to the body structure of a person with high fever, the body
will help calculate the time required to lower the temperature to a certain degree
wants you to develop a formula.
Heat produced in the human body 400 W, total heat passing through the body through transmission, convection and radiation
If 800 W and body specific heat 3500 kJ / kgK, other students may also need other features.
By choosing according to your own body structure, the time to lower the body temperature by 10 o C.
You calculate.

size=180cm

weight=93

In: Mechanical Engineering

Please create a C++ program that will ask a high school group that is made of...

Please create a C++ program that will ask a high school group that is made of 5 to 17 students to sell candies for a fund raiser. There are small boxes that sell for $7 and large ones that sell for $13. The cost for each box is $4 (small box) and $6 (large box). Please ask the instructor how many students ended up participating in the sales drive (must be between 5 and 17). The instructor must input each student’s First name that sold items and enter the number of each box sold each (small or large). Calculate the total profit for each student and at the end of the program, print how many students participated and the total boxes sold for each (small and large) and finally generate how much profit the group made. (15 points)

In: Computer Science

The supply curve of work requiring a high school degree or less is QS = -...

The supply curve of work requiring a high school degree or less is QS = - 13,000 + 2000P and the demand for such work is QD = 11,000 - 1000P. Assume this is a competitive market.

1. What quantity is hired if a minimum wage of $10 is imposed? What is the deadweight loss (DWL) of this policy?

2. Instead of a minimum wage, policymakers introduce a $1.5 wage subsidy (think EITC). What is the quantity of work supplied under this policy? What is the DWL of this policy?

3. What percentage of the subsidy is captured by the employers? (Hint: the buyer's burden is represented by

In: Economics

The supply curve of work requiring a high school degree or less is QS = -...

The supply curve of work requiring a high school degree or less is QS = - 13,000 + 2000P and the demand for such work is QD = 11,000 - 1000P. Assume this is a competitive market.

a) What is the market wage and quantity?

b) What quantity is hired if a minimum wage of $10 is imposed? What is the deadweight loss (DWL) of this policy?

c) Instead of a minimum wage, policymakers introduce a $1.5 wage subsidy (think EITC). What is the quantity of work supplied under this policy? What is the DWL of this policy?

d) What percentage of the subsidy is captured by the employers? (Hint: the buyer's burden is represented by ϵ S ϵ S − ϵ D)

In: Economics

The Business School at Eastern College is collecting data as a first step in the preparation...

The Business School at Eastern College is collecting data as a first step in the preparation of next year's budget. One cost that is being looked at closely is administrative staff as a function of student credit hours. Data on administrative costs and credit hours for the most recent 13 months follow.

Month Administrative Costs Credit Hours
July $ 129,301 250
August 82,613 115
September 228,580 1,392
October 216,394 1,000
November 258,263 1,309
December 184,449 1,112
January 219,137 1,339
February 245,000 1,373
March 209,642 1,064
April 191,925 1,123
May 249,978 1,360
June 170,418 420
July 128,167 315
Total $ 2,513,867 12,172
Average $ 193,374 936

The controller's office has analyzed the data and given you the results from the regression analysis, as follows.

SUMMARY OUTPUT

Regression Statistics
Multiple R 0.93339145
R Square 0.871219590
Adjusted R Square 0.859512280
Standard Error 19954.56760
Observations 13

ANOVA

df SS MS F Significance F
Regression 1 29631603873.00 29631603873.00 74.4200000 0.0000032
Residual 11 4380032428 398184766
Total 12 34011636301.00


Coefficients Standard Error T Stat P-value Lower 95% Upper 95%
Intercept 96414.557 12528.42904 7.69566211 0.0000094 68839.6563 123989.4569
Credit Hours 103.5555179 12.0043317 8.62651257 0.0000032 77.1341487 129.9768871


Required:

a. In the standard regression equation y = a + bx, the letter b is best described as the:

  • Constant coefficient

  • Correlation coefficient

  • Dependent variable

  • Independent variable

  • Variable cost coefficient

b. In the standard regression equation y = a + bx, the letter y is best described as the:

  • Constant coefficient

  • Correlation coefficient

  • Dependent variable

  • Independent variable

  • Variable cost coefficient

c. In the standard regression equation y = a + bx, the letter x is best described as the:

  • Constant coefficient

  • Correlation coefficient

  • Dependent variable

  • Independent variable

  • Variable cost coefficient

d. If the controller uses the high-low method to estimate costs, the cost equation for administrative costs is: (Do not round your intermediate calculations.)

  • Cost = $69,468 + ($114 × Credit hours)

  • Cost = $67,313 + ($133 × Credit hours)

  • Cost = $193,374.00 × Credit hours

  • Cost = $207

  • Some other equation


e. Based on the results of the controller's regression analysis, the estimate of administrative costs in a month with 1,000 credit hours would be: (Round your intermediate calculations to 2 decimals.)

  • 198,808

  • 201,000

  • 96,409

  • 199,975

  • Some other amount

f. The correlation coefficient (rounded) for the regression equation for administrative costs is:

  • 0.871

  • 0.933

  • 0.859

  • 0.966

  • Some other amount


g. The percent of the total variance (rounded) that can be explained by the regression is:

  • 93.3

  • 87.1

  • 85.9

  • 96.6

  • Some other amount

In: Finance

A playground is on the flat roof of a city school, 6.5 m above the street...

A playground is on the flat roof of a city school, 6.5 m above the street below (see figure). The vertical wall of the building is h = 7.80 m high, forming a 1.3-m-high railing around the playground. A ball has fallen to the street below, and a passerby returns it by launching it 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. (a) Find the speed at which the ball was launched. (Give your answer to two decimal places to reduce rounding errors in later parts.) m/s (b) Find the vertical distance by which the ball clears the wall. m (c) Find the horizontal distance from the wall to the point on the roof where the ball lands.

In: Physics