Ask Question, Ask an Expert


Ask Statistics and Probability Expert

Answer the following problem related to testing.

For items 1 to 4, select the best statistical analysis technique for the following research topics.  Be very precise about your statistical choice.  For ex, there are several types of t-tests, correlations, and ANOVA tests.  Make sure you specify exactly which statistical analysis technique you would use, e.g. One-Way Anova.  Note down the following abbreviations: IV = independent variable and DV = dependent variable.

1. You want to study regional differences (IV) in household savings (DV measured in dollars.)  You randomly select samples of households in the North, East, South, and West.

2. You want to compare differences in pounds of weight loss (DV) for 79 middle age adults before and after they have attended a rigorous exercise class.

3. You wish to test the null hypothesis that age (defined as young = 20 to 30 years old, and middle age = 31 to 50) makes no difference in purchasing one of four makes of cars (DV = Honda, Toyota, Lexus, Chevy).Which statistical test would you conduct?

4. Referring back to item 3, assume the critical value for this test is 6.73, and you obtain a computed statistical value of 11.27.   Is there evidence to accept the null hypothesis?

For items 5 to 7: You want to compare the effectiveness of three methods of training (IV) in how to handle interviews with the press.  You plan to administer a test (DV measured on an interval scale) to the participants in three different seminars with each seminar using a different training method.

5. State the research hypothesis you are testing.

6. Which sampling method would yield the best representative sample? prepare a paragraph of at least six sentences with the rationale for the selecting the sampling design. Cite the source of the sampling design.

7. Which inferential statistical test would you use for the method of training case scenario (described above) and why?

For problems 8 and 9: Your employer asks you to determine whether sales of cars (DV) can be predicted from the GDP (Gross Domestic Product).

8. What is the appropriate inferential statistical test for the case scenario?

9. Referring back to item 8, if the computed statistical result is significant, what would you know?

10. You run a two tail t-test.  The critical value for this test at the .05 level is a t of 7.82.  What value should the obtained t-test statistic be in order to be considered significant at the .05 level?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M921897

Have any Question? 

Related Questions in Statistics and Probability

Professor professorson a researcher at greendale community

Professor Professorson, a researcher at Greendale Community College, is interested in the effect of caffeine on the typing speed of students. Professorson obtains a random sample of 8 students who are given 400 mg of caf ...

Statistics paperthe final paper provides you with an

STATISTICS Paper The Final Paper provides you with an opportunity to integrate and reflect on what you have learned during the class. The question to address is: "What have you learned about statistics?" In developing yo ...

1 what is a factorial design why are factorial designs used

1. What is a factorial design? Why are factorial designs used more frequently than one-way designs? 2. How many independent variables are involved in a 3 x 3 factorial design? How many levels are there of each variable? ...

In the following cross-lagged panel design does x appear to

In the following cross-lagged panel design, does X appear to cause Y, does Y appear to cause X, do both variables influence each other, or are X and Y unrelated?

George john and thomas are standing first second and third

George, John, and Thomas are standing first, second, and third in a line, respectively. Each one sees the persons standing in front of him. James announces: "I have three red hats and two white hats. I will place a hat o ...

Putting measurement to workthis exercise gives you the

Putting Measurement to Work This exercise gives you the opportunity to develop a measurement strategy of your own. 1. Identify an area of the social sciences you know something about (aging, marriage and the family, crim ...

Suppose a firm that produces light bulbs wants to know

Suppose a firm that produces light bulbs wants to know whether it can say that its light bulbs typically last more than 1500 hours. Hoping to find support for their claim, the firm collects a random sample of n = 25 ligh ...

1 can single-case experimental designs be used to test the

1. Can single-case experimental designs be used to test the effects of various levels of an independent variable (as in a one-way group design)? Explain. 2. How many levels of the independent variable are there in an ABA ...

At a university the average cost of books per student has

At a university, the average cost of books per student has been $400 per student per semester. The Dean of Students believes that the costs are increasing and that the average is now greater than $400. He surveys a sampl ...

Digital data are transmitted as a sequence of signals that

Digital data are transmitted as a sequence of signals that represent 0s or 1s. Suppose that such data are being transmitted to a satellite and then relayed to a distant site. Suppose that due to electrical interference i ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen