To what extent is blushing attractive? To help find out Pazda et al. (2016) aske

Question

To what extent is blushing attractive? To help find out Pazda et al. (2016) asked male participants to look at photos of women.Each participant saw a photo of the same women, but one photo was manipulated to have redder checks. Each participant specified which photo they found most attractive, the one with extra red (1) or the unaltered original photo (0). Each participant rated 6 different pairs of photos. The researchers found that the redder photo was picked 72% of the time. They then used the NHST approach to test this result against a null hypothesis of 50%, which represents even preference. They found: t(132) = 7.59,p < 0.001.

The redder photo was preferred 72% of the time. Will the 95% CI for preference include 50%?

Explanation / Answer

They used the NHST approach to test this result against a null hypothesis of 50%

Given t(132)=7.59

P<0.001, we reject the H0.Hence claim is significant.

SInce we are rejecting the Null hypothesis then the confidence interval doesnot contain the population value i.e,50%

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