# Math Assignment | College Homework Help

Assignment 3

Don't use plagiarized sources. Get Your Assignment on
Math Assignment | College Homework Help
Just from \$13/Page

Statistics Exercise II: Statistical inference, 1- and 2-sample t-tests

These weekly exercises provide an opportunity for you to understand and apply statistical methods and analysis. Unless otherwise stated, use 5% (.05) as your alpha level (the cutoff for statistical significance).

#1.  Define “power” in relation to hypothesis testing.

#2.  Alpha (a) is used to measure the error for decisions concerning true null hypotheses. What is the beta (ß) error used to measure?

#3.  In the following studies, state whether you would use a one-sample t-test or a two-independent-sample t-test.

1. A study testing whether night-shift workers sleep the recommended 8 hours per day
2. A study measuring differences in attitudes about morality among Democrats and Republicans
3. An experiment measuring differences in brain activity among rats placed on either a continuous or an intermittent reward schedule

Use SPSS and the data file found in syllabus resources (DATA540.SAV) to answer the following questions.  Round your answers to the nearest dollar, percentage point, or whole number.

#4.  Test the age of the participants (AGE1) against the null hypothesis H0 = 34.  Use a one-sample t-test.  How would you report the results?

a.         t = -1.862, df = 399, p > .05 b.         t = -1.862, df = 399, p < .05 c.         t = 1.645, df = 399, p > .05 d.         t = 1.645, df = 399, p

#5.  What is the mean and standard deviation for the Lifestyle score (L)?

a.  31.22, 7.99 b.  36.19, 8.54 c.  30.03, 7.28 d.  55, 13

#6.  The first case shown in the data file is a firefighter with a financial Risk-Taking score (R) of 38.  What is his Risk-Taking z-score (hint: you will need to find the Risk-Taking mean and standard deviation)?

a.  0.179 b.  -0.223 c.  1.342 d.  -1.223

#7.  Perform independent sample t-tests on the Lifestyle, Dependency, and Risk-Taking scores (L, D, and R) comparing men and women (GENDER1).  Use p < .05 as your alpha level and apply a two-tailed test.  On each of the three scales, do men or women have a significantly higher score?

a. Lifestyle: Men, Dependency: Women, Risk-Taking: Men.b. Lifestyle: Not significantly different, Dependency: Women, Risk-Taking: Men c. Lifestyle: Women, Dependency: Women, Risk-Taking: Mend. Lifestyle: Men, Dependency: Men, Risk-Taking: Not significantly different

#8. The median US salary is \$50,700, according to US Census data. Using a one-sample t-test, test to see if participant income (INC1) is different from the national average. Use a two-tailed test and an alpha level of 5%.

1. Participant income is significantly greater than the national average
2. Participant income is significantly less than the national average
3. Participant income is not significantly different from the national average
4. Participant income cannot be compared to the national average Get Math homework help today

Calculate the price
Pages (550 words)
\$0.00
*Price with a welcome 15% discount applied.
Pro tip: If you want to save more money and pay the lowest price, you need to set a more extended deadline.
We know how difficult it is to be a student these days. That's why our prices are one of the most affordable on the market, and there are no hidden fees.

Instead, we offer bonuses, discounts, and free services to make your experience outstanding.
How it works
Receive a 100% original paper that will pass Turnitin from a top essay writing service
step 1
Fill out the order form and provide paper details. You can even attach screenshots or add additional instructions later. If something is not clear or missing, the writer will contact you for clarification.
Pro service tips
How to get the most out of your experience with Homework Writing Services
One writer throughout the entire course
If you like the writer, you can hire them again. Just copy & paste their ID on the order form ("Preferred Writer's ID" field). This way, your vocabulary will be uniform, and the writer will be aware of your needs.
The same paper from different writers
You can order essay or any other work from two different writers to choose the best one or give another version to a friend. This can be done through the add-on "Same paper from another writer."
Copy of sources used by the writer
Our college essay writers work with ScienceDirect and other databases. They can send you articles or materials used in PDF or through screenshots. Just tick the "Copy of sources" field on the order form.
Testimonials
See why 20k+ students have chosen us as their sole writing assistance provider
Check out the latest reviews and opinions submitted by real customers worldwide and make an informed decision.
im happy
Customer 453915, January 28th, 2020
Marketing
I'm beyond grateful for this paper to be completed on time. I recently had a major surgery on my chest and sternum and was in so much pain and didn't want to fail from one paper. The work is awesome!!!! Very knowledgeable and informative, just excellent.
Customer 454165, March 17th, 2020
Other
thank you very much
Customer 462327, September 22nd, 2022
Management
Excellent work. Very grateful. Thank you. Will use again.
Customer 454227, April 4th, 2020
Military
excellent
Customer 456821, September 1st, 2022
I received a mastery on this assignment!
Customer 463143, August 31st, 2022
English 101
Thank you!
Customer 454351, May 9th, 2020
Other
The paper was beautifully written and all instructions were followed exactly as stated. Thank you so much for delivering a quality paper.
Customer 452455, February 22nd, 2023
good
Customer 453413, April 26th, 2020
Military
Good job
Customer 456821, November 13th, 2022
Military
good job
Customer 456821, October 20th, 2022
Outstanding work!!
Customer 460073, August 4th, 2022
11,595
Customer reviews in total
96%
Current satisfaction rate
3 pages
Average paper length
37%
Customers referred by a friend