Assignment 4: T test for Dependent samples
Directions
Conduct a T test for Dependent Samples to answer the questions
based on the following scenario. (Assume a nondirectional research
hypothesis (two-tailed test) and a level of significance of
.05)
Scenario
To further examine the school performance scores of the
district, the superintendent identified schools within the district
that could be matched to schools from surrounding districts using a
series of demographic characteristics such as size, socio-economic
status, and percent special education...
Assignment #4: T test for Dependent Samples
Directions: Conduct a T test for Dependent Samples to answer the
questions based on the following scenario. (Assume a nondirectional
research hypothesis (two-tailed test) and a level of significance
of .05)
To further examine the school performance scores of the
district, the superintendent identified schools within the district
that could be matched to schools from surrounding districts using a
series of demographic characteristics such as size, socio-economic
status, and percent special education students....
1). What is the difference between a t-test for independent
samples and a t-test for dependent samples?
2). Provide one study that would be analyzed using a t-Test for
dependent samples; then provide one study that would be analyzed
using a t-Test for independent samples
a) How can we decide if we need to use a one-tailed or
two-tailed test when conducting our analyses?
b) What are the differences between the two?
c) Why do we need to make the choice between a one-tailed or a
two-tailed test? Discuss types of research where using the
t statistic may be an appropriate alternative to using a
z-score
2.2. Indicate which test (paired samples (ie dependent) t-test,
independent two samples t-test, one-sample t-test, independent
samples z-test) is most appropriate for the following situations :
A. Comparison of weight gain of two groups of 18 cows where one
group was raised following standard practices and the other group
was raised following “organic” standards.
B. Comparison of scores on a fitness test of Olympic-class
distance runners (n=20) with the national average score of people
of a similar age range (22-31...
Indicate which test (dependent samples t-test, independent
samples t-test, independent samples z-test) is most appropriate for
the following situation:
i. Comparison of mean recycling participation between 9 large
cities and 11 small cities
ii. Comparison of the weights of 16 Toronto Maple Leaf rookies
at the beginning versus the end of the regular NHL season.
iii. Comparison of fin length of 35 male and 37 female brook
trout sampled in Spruce Lake, Nottingham Forest.
iv. Comparison of the mass of...
What is the appropriate statistical analysis to use: t-test for
two independent samples, t-test for dependent samples, ANOVA, or
chi-square test of independence? Please identify and explain why it
is appropriate.
is asking which test should i use for each question below and
why
(a) A study was conducted to see whether monetary incentives to
use less water during times of drought had an effect on water
usage. Sixty single family homeowners were randomly assigned to one
of two groups:...
What is the one-tailed, lower-tail critical value for the
Wilcoxon rank sum test statistic, T1, for the following
information:
alphaα = 0.01, n1 = 6, n2 = 8