Question
A political scientist hypothesize that a political ad will increase attitudes about a particular issue. The...
A political scientist hypothesize that a political ad will
increase attitudes about a particular issue. The scientist randomly
asks 21 individuals walking by to see the ad and then take a quiz
on the issue. The general public that knows little to nothing about
the issue, on average, scores 50 on the quiz. The individuals that
saw the ad scored an average of 51.8 with a variance of 29.05. What
can the political scientist conclude with α = 0.05?
a) What is the appropriate test statistic
one-sample t-test
independent-samples t-test
related-samples t-test
If appropriate, compute the CI. If not appropriate, input "na"
for both spaces below.
[ , ]
Compute the corresponding effect size
r2 = ; ---Select--- \ trivial effect small effect medium effect large effect
Homework Answers
Answer #1
a) The appropriate test statistic - one-sample t-test
e) The effect size is
,
small effect.
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