+1-415-315-9853

info@mywordsolution.com

## Statistics

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

### 1 must all experiments include a control group explain2 in

1. Must all experiments include a control group? Explain. 2. In what way do researchers take a risk if they do not pilot test the independent variable they plan to use in an experiment?

### Discuss the changes in beliefs from the end of the

Discuss the changes in beliefs from the end of the pre-modern period into the modern period, providing two (2) examples. Discuss how these changes have impacted current practice in psychology, providing two (2) examples.

### Problem 1 if we were to visit europa one of jupiters

Problem 1: If we were to visit Europa (one of Jupiter's Galilean moons) and we were to look at the sky, what would be Jupiter's angular size if Jupiter is in average 670,900 km away from Europa and has a diameter of 139, ...

### A research concludes that the number of hours of exercise

A research concludes that the number of hours of exercise per week for adults is normally distributed with a mean of 3.5 hours and a standard deviation of 3 hours. Show all work. Just the answer, without supporting work, ...

### 1 why are psychologists sometimes interested in

1. Why are psychologists sometimes interested in epidemiology? 2. Why do researchers use probability rather than nonprobability samples when doing descriptive research?

### One thousand people are enrolled in a 10 year cohort study

One thousand people are enrolled in a 10 year cohort study. At the start of the study, 100 have diagnosed CVD. Over the course of the study, 80 people who were free of CVD at baseline develop CVD. What is the cumulative ...

### The middlecreek branch of the national bank of virginia has

The Middlecreek Branch of the national bank of Virginia has 8 real estate loans over \$1,000,000. Of these 8 loans, 3 are "underwrite." A loan is underwater if the amount of the loan is greater than the value of the prope ...

### In a pulse rate research a simple random sample of 120 men

In a pulse rate research, a simple random sample of 120 men results in a mean of 80 beats per minute, and a standard deviation of 11 beats per minute. Based on the sample results, the researcher concludes that the pulse ...

### Spss assignment 02the data set you need to do the

SPSS Assignment 02 The data set you need to do the assignment can be found on Blackboard in the folder "Assignments and due dates" and in the spreadsheet "Data for Assignment 2". This is a group assignment and you can su ...

### Jim has weighted gpa of 384 his high school gpas are

Jim has weighted GPA of 3.84. His high school GPA's are normally distributed with a mean of 2.9 and a standard deviation of 0.5. Kim's high school uses unweighted GPA's and she has a GPA of 3.57. GPA's are also normally ...

• 13,132 Experts

## 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.

### 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