Two different machines, A and B, used for torsion tests of steel wire were tested on 12 pairs of different types of wire, with one member of each pair tested on each machine.

The results (break angle measurements) were as follows:

Machine A: 32, 35, 38, 28, 40, 42, 36, 29, 33, 37, 22, 42

Machine B: 30, 34, 39, 26, 37, 42, 35, 30, 30, 32, 20, 41

[a] Construct a side-by-side boxplot to display the two data sets and comment on interesting features.                                                                                                                                                                  [4 pt]

[b] Construct a QQ-plot (with a qqline) for each data set.                                                                 [3 pt]

How would you describe your Q-Q plot?

[c] Perform a Shapiro-Wilks normality test on each data set. What are the results regarding the data sets?                                                                                                                                                                        [3 pt]

[d] Based on your results [a] through [c], can you conduct a two-sample t-test for the data sets? Explain your response.                                                                                                             

Answer:           Yes                  No                   E Circle one                                                              [1 pt]

Explanation:                                                                                                                                       [3 pt]

[e] Is there evidence at the 5% significance level to suggest that machines A and B give different mean readings?

Write the null and alternative hypotheses test symbolically and verbally.                                        [8 pt]

Use R to get analysis results. State what the results tell you about the data.                                     [8 pt]

[f] Is there evidence at the 5% significance level to suggest that machine B gives a lower average reading than machine A?

Write the null and alternative hypotheses test symbolically and verbally.                                        [8 pt]

Use R to get analysis results. State what the results tell you about the data.                                     [8 pt]

[g] Your R codes or Excel commands for parts [a], [b], [c], [e], and [f] are required for credit.      [10 pt]

Copy and paste them here or paste them onto a blank MS Word document.

A school psychologist wishes to study the influence of three new curricula plans on the history achievement of junior high school students. Although the groups of students were selected on a fairly random basis, the psychologist has learned that there is considerable disparity among the groups with respect to verbal aptitude.

What is the appropriate design to use in this study?

Why is the design you named about appropriate?

List ALL variables involved in this design

State the appropriate research question

A school psychologist wishes to study the influence of three new curricula plans on the history achievement of junior high school students. Although the groups of students were selected on a fairly random basis, the psychologist has learned that there is considerable disparity among the groups with respect to verbal aptitude.

What is the appropriate design to use in this study?

Why is the design you named about appropriate?

List ALL variables involved in this design

State the appropriate research question

A school psychologist wishes to study the influence of three new curricula plans on the history achievement of junior high school students. Although the groups of students were selected on a fairly random basis, the psychologist has learned that there is considerable disparity among the groups with respect to verbal aptitude.

What is the appropriate design to use in this study?

Why is the design you named about appropriate?

List ALL variables involved in this design

State the appropriate research question

A school psychologist wishes to study the influence of three new curricula plans on the history achievement of junior high school students. Although the groups of students were selected on a fairly random basis, the psychologist has learned that there is considerable disparity among the groups with respect to verbal aptitude.

What is the appropriate design to use in this study?

Why is the design you named about appropriate?

List ALL variables involved in this design

State the appropriate research questionv

A school psychologist wishes to study the influence of three new curricula plans on the history achievement of junior high school students. Although the groups of students were selected on a fairly random basis, the psychologist has learned that there is considerable disparity among the groups with respect to verbal aptitude.

What is the appropriate design to use in this study?

Why is the design you named about appropriate?

List ALL variables involved in this design

State the appropriate research question

A school psychologist wishes to study the influence of three new curricula plans on the history achievement of junior high school students. Although the groups of students were selected on a fairly random basis, the psychologist has learned that there is considerable disparity among the groups with respect to verbal aptitude.

What is the appropriate design to use in this study?

Why is the design you named about appropriate?

List ALL variables involved in this design

State the appropriate research question

A school psychologist wishes to study the influence of three new curricula plans on the history achievement of junior high school students. Although the groups of students were selected on a fairly random basis, the psychologist has learned that there is considerable disparity among the groups with respect to verbal aptitude.

What is the appropriate design to use in this study?

Why is the design you named about appropriate?

List ALL variables involved in this design

State the appropriate research question

A school psychologist wishes to study the influence of three new curricula plans on the history achievement of junior high school students. Although the groups of students were selected on a fairly random basis, the psychologist has learned that there is considerable disparity among the groups with respect to verbal aptitude.

What is the appropriate design to use in this study?

Why is the design you named about appropriate?

List ALL variables involved in this design

State the appropriate research questionv

Suppose the economy is in a long-run equilibrium.
a. Draw a diagram to illustrate the state of the economy. Be sure to show aggregate demand, short run aggregate supply, and long-run aggregate supply.
b. Now suppose that a stock market crash causes aggregate demand to fall. Use your diagram to show what happens to output and the price level in the short run. What happens to the unemployment rate?
c. Use the sticky-wage theory of aggregate supply to explain what will happen to output and the price level in the long run (assuming no change in policy). What role does the expected price level play in this adjustment? Be sure to illustrate your analysis in a graph.

1.Explain four factors related to weight control.
2. State and thoroughly explain the factors that need to be balanced for weight control.
3.What are your goals for weight control and what is your plan to accomplish them?

For your ninth discussion board topic, you will need to watch “State of the Union: Politics in Red and Blue,” which can be found in the Required Learning Materials for Module 13. Click on reply at the bottom. This will open a dialogue box. Respond to the following: How is the polarization of U.S. politics creating problems in the social structure? For this discussion, you may want to focus on the following key concepts in the course: Authority, Political Participation, Democracy, Polarization

Medical tests were conducted to learn about drug-resistant tuberculosis. Of 142 cases tested in British Columbia, 9 were found to be drug resistant. Of 268 cases tested in Ontario, 5 were found to be drug-resistant. Do these data suggest a statistically significant difference between the proportions of drug-resistant cases in the two provinces? Use a significance level α=0.01

a) State the hypotheses.

b) Calculate the test statistic.

c) Use Excel to find the p-value.

Hint: Use NORM.DIST.

d) What is your hypothesis test decision?

Hint: There are two possible decisions: reject H0 in favour of Ha or fail to reject H0

e) What is your conclusion in the context of the application?

Hint: The conclusion should relate back to the question.

What changes in children’s school and other socialization experiences will enable girls to acquire different occupational skills? Please explain with sufficient detail.

What are the key biological, psychological, sociocultural, and life-cycle forces that should inform training programs concerning sexual harassment in the workplace? Please address this question with sufficient detail.

Explain, in detail, the physics behind why the magnet slows its descent through the tube (it does not touch the sides). In your discussion be sure to explain why the magnet doesn't come to a stop in the tube and why it does not speed up. Your response should include at least 3 paragraphs to show your mastery of the material.

1. Does your state have a statutory Patient’s Bill of Rights? Where in the statues is it found? If your state does not have a statutory Patient’s Bill of Rights, find a state that does.. 2. Locate the Web site for the Agency for Health care Research and Quality (AHRQ). Who sponsors this web site? What is the purpose? Find a t least two important studies about health care access and summarize the cases.