A political scientist hypothesize that a political ad willincrease attitudes about a particular issue. The scientist randomlyasks 21 individuals walking by to see the ad and then take a quizon the issue. The general public that knows little to nothing aboutthe issue, on average, scores 50 on the quiz. The individuals thatsaw the ad scored an average of 51.8 with a variance of 29.05. Whatcan the political scientist conclude with α = 0.05?

a) What is the appropriate test statistic?
---Select--- na z-test one-sample t-test independent-samples t-testrelated-samples t-test

b)
Population:
---Select--- the particular issue the political ad individualswalking by general public the ad
Sample:
---Select--- the particular issue the political ad individualswalking by general public the ad

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

d) If appropriate, compute the CI. If notappropriate, input \"na\" for both spaces below.
[  ,  ]

e) Compute the corresponding effect size(s) andindicate magnitude(s).
If not appropriate, input and/or select \"na\" below.
d =  ;   ---Select--- na trivialeffect small effect medium effect large effect
r² =  ;   ---Select--- natrivial effect small effect medium effect large effect

f) Make an interpretation based on theresults.

Individuals that watched the political ad scored significantlyhigher on the quiz than the general public

.Individuals that watched the political ad scored significantlylower on the quiz than the generalpublic.    

Individuals that watched the political ad did not scoresignificantly different on the quiz than the general public.