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## Homework 8 - Behavioral Stats

by: Kimberly Torres

8

0

4

# Homework 8 - Behavioral Stats PSY 2053

Marketplace > Arkansas Tech University > Psychlogy > PSY 2053 > Homework 8 Behavioral Stats
Kimberly Torres
Arkansas Tech University

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Homework 8
COURSE
Statistics/ Behav Science
PROF.
Jennifer E. Samson
TYPE
Class Notes
PAGES
4
WORDS
CONCEPTS
Stats, Behavioral Stats, psy, PSY 2053
KARMA
25 ?

## Popular in Psychlogy

This 4 page Class Notes was uploaded by Kimberly Torres on Monday February 15, 2016. The Class Notes belongs to PSY 2053 at Arkansas Tech University taught by Jennifer E. Samson in Fall 2015. Since its upload, it has received 8 views. For similar materials see Statistics/ Behav Science in Psychlogy at Arkansas Tech University.

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Date Created: 02/15/16
PSY/SOC 2053 Homework 8 1. Exercise histogram, Left skewed 5 4 y 3 n q f 2 1 0 0 2 4 6 8 10 12 exercise 2. 5 number summary 0% 25% 50% 75% 100% n 0 4.75 7.5 9.25 12 20 3. Fast food vs. sit down restaurants - exercise What type of test do you need? Independent sample t-test Ho = µ1 - µ2 = 0 Ha = µ1 - µ2 ≠ 0 data: exercise by restaurant t = -1.1022, df = 13.428, p-value = 0.2897 alternative hypothesis: true difference in means is not equal to 0 PSY/SOC 2053 Homework 8 95 percent confidence interval: -5.250961 1.695406 sample estimates: mean in group FF mean in group SD 6.222222 8.000000 t13.42 = -1.102, p=0.2897 p=0.2897 > α=.05, Fail to reject – no difference. 4. Exercising – Reading What type of test do you need? Paired sample t-test Ho = µ1 - µ2 = 0 Ha = µ1 - µ2 ≠ 0 Paired t-test data: exercise and reading t = 3.8779, df = 19, p-value = 0.001013 alternative hypothesis: true difference in means is not equal to 0 95 percent confidence interval: 1.772039 5.927961 sample estimates: mean of the differences 3.85 t19 = 3.88, p=0.001 p=0.001 < α=.05 , Reject Ho (Null) – There is a difference with the time spent exercising and reading. 5. Recommended time for exercise PSY/SOC 2053 Homework 8 What type of test do you need? One sample t-test Ho = µ = 60 Ha = µ ≠ 60 One Sample t-test data: exercise t = 0.18179, df = 19, p-value = 0.8577 alternative hypothesis: true mean is not equal to 60 95 percent confidence interval: 41.60169 81.89831 sample estimates: mean of x 61.75 t19 = 0.18, p=0.86 p=0.86 > α= .05, Fail to reject, no difference. ATU students in average do exercise at least 60 minutes. 6. Average time reading What type of test do you need? Paired sample t-test Ho = µ1 - µ2 = 0 Ha = µ1 - µ2 ≠ 0 Paired t-test data: reading and genre t = 1.5305, df = 19, p-value = 0.1424 alternative hypothesis: true difference in means is not equal to 0 PSY/SOC 2053 Homework 8 95 percent confidence interval: -0.4227029 2.7227029 sample estimates: mean of the differences 1.15 t19 = 1.53, p= 0.14 p=0.14 > α=.05 Fail to reject, no difference.

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