A story spoiler gives away the ending early. Does having a story spoiled in this way diminish suspense and hurt enjoyment? A study 1 investigated this question. For twelve different short stories, the...

A story spoiler gives away the ending early. Does having a story spoiled in this way diminish suspense and hurt enjoyment? A study¹ investigated this question. For twelve different short stories, the study’s authors created a second version in which a spoiler paragraph at the beginning discussed the story and revealed the outcome. Each version of the twelve stories was read by at least 30 people and rated on a 1 to 10 scale to create an overall rating for the story, with higher ratings indicating greater enjoyment of the story. The ratings are given in Table 1 and stored inStorySpoilers. Stories 1 to 4 were ironic twist stories, stories 5 to 8 were mysteries, and stories 9 to 12 were literary stories. Here we measure the size of the effect on mean rating.

Find a 95% confidence interval for the difference in mean enjoyment rating between stories with a spoiler and stories without.


Click here for the dataset associated with this question.


Round your answers to three decimal places.


The 95% confidence interval is ____? to ___?

ALSO, test statistic= ?

p value= ?