Question

An educational psychologist randomly divides a sample of students into two groups. In one of the groups students receive training in a new studying strategy. Then all students are given 30 minutes to study a chapter from a math textbook before they take a quiz on the chapter. The psychologist hypothesizes that the new studying strategy will be more effective. What can the psychologist conclude with α = 0.05? The quiz data are below.

training	no training
6 4 6 7 7 6 4 7	6 5 6 5 4 5 5 4

a) What is the appropriate test statistic?
---Select--- na z-test One-Sample t-test Independent-Samples t-test Related-Samples t-test

b)
Condition 1:
---Select--- training math quiz score no training 30 minutes
Condition 2:
---Select--- training math quiz score no training 30 minutes

c) Compute the appropriate test statistic(s) to make a decision about H₀.
(Hint: Make sure to write down the null and alternative hypotheses to help solve the problem.)
p-value =  ; Decision:  ---Select--- Reject H0 Fail to reject H0

d) Using the SPSS results, compute the corresponding effect size(s) and indicate magnitude(s).
If not appropriate, input and/or select "na" below.
d =  ;   ---Select--- na trivial effect small effect medium effect large effect
r² =  ;   ---Select--- na trivial effect small effect medium effect large effect

e) Make an interpretation based on the results.

Participants that received training in the new studying strategy had significantly higher quiz scores than those with no training.Participants that received no training had significantly higher quiz scores than those the received training in the new studying strategy.    There is no significant quiz score different between participant that received the new training or not.

Answer 1