Compute spss and confidence interval , Basic Statistics

Assignment Help:

A researcher is interested in characteristics of HIV+ and HIV- adolescents interviewed 166 young adults about their experiences during adolescence. He wished to know, among other things, if there were significant differences in the ages at which HIV+ and HIV- young adults became sexually active. The following is the printout of this analysis:

HIV Status                     N      Mean     sd           Stnd. Error
Age at         Positive      57     13.2     2.96576     .39282
first sexual
experience Negative     109     15.1     2.57286     .24644

Independent Samples Test
Levene's Test for
Equality of Variances
F Sig
Age at Equal variance assumed 1.313 .254
first sexual
experience Equal variance not assumed

t-test for Equality of Means
                                                                        t            df      sig.       mean difference
Age at                 Equal variance assumed           -2.870   164     .005        -1.9
first sexual
experience           Equal variance not assumed     -2.745   99.66  .007        -1.9

1. Were there significant differences between the groups. Give the relevant stastical data to support your answer?

2. What is the confidence interval associated with your answer to item 1?

Each of the questions on the following pages is a calculation problem worth 10 points. Partial credit will be awarded if I can following your procedures and determine that errors are arithmetic rather than conceptual. It would be wise, therefore, to clearly indicate your worksteps on each problem.

3. For the following data set, calculate the oneway ANOVA and test for significance at the .05 level.

Group 1                       Group 2                       Group 3                       Group 4

x          x2                     x          x2                     x          x2                     x          x2

7          49                    10        100                  12        144                  16        256

8          64                    12        144                  14        196                  15        225

7          49                    13        169                  13        169                  18        324

9          81                    13        169                  11        121                  17        289

9          81                    14        196                  13        169                  20        400

11        121                  15        225                  15        225                  21        441

10        100                  14        196                  13        169                  22        484

61        545                  91     1,199                  91     1,193                 129     2,419


Related Discussions:- Compute spss and confidence interval

What is hurdle rate, What is hurdle rate? In investment spending budget...

What is hurdle rate? In investment spending budget, challenge amount is the minimal amount that an organization desires to earn when getting a venture. Hence the challenge amou

Angular histogram, Angular Histogram A method or technique for displayin...

Angular Histogram A method or technique for displaying the circular data, which involves the wrapping of the usual histogram around a circle. Each bar in the histogram is center

Management accounting, Q. CRSL has a large auditorium which can cater for ...

Q. CRSL has a large auditorium which can cater for 300 people and is ideal for formal balls and functions. The auditorium can also be reconfigured to cater for 100 people. The Sea

Probability, A survey was done where a random sample of people 18 and over ...

A survey was done where a random sample of people 18 and over were asked if they preferred comedies, dramas, or neither. The information gathered was broken down by age group and t

Proton-neutron hypothesis, This hypothesis was put forward by Heinsberg aft...

This hypothesis was put forward by Heinsberg after the discovery by Chadwick. According to this hypothesis, a nucleus of mass number A and atomic number Z contains Z protons, and

Why is an increase in inventory shown as a negative amount?, Why is an incr...

Why is an increase in inventory shown as a negative amount? A rise in stock indicates that a company has purchased more goods than it has sold. Increasing stock requires a money

How to calculate midrange in statistics?, Midrange The midrange is the ...

Midrange The midrange is the measure of the center that is the value midway between the highest and the lowest values in the original data set. It is found by adding the highes

Accounting equation, A.Austria invested cash $1,000 and a type writer $2,50...

A.Austria invested cash $1,000 and a type writer $2,500

Rebate, Refund can be defined as return of a part of a purchase price by a ...

Refund can be defined as return of a part of a purchase price by a seller to a buyer, usually on a purchase of a specified quantity or a value of goods within a specified period.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd