Chapter 6, Section 5, Exercise 252
Testing whether Story Spoilers Spoil Stories
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 people and rated on a to 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 in StorySpoilers. Stories to were ironic twist stories, stories to were mysteries, and stories to were literary stories. Test to see if there is a difference in mean overall enjoyment rating based on whether or not there is a spoiler.
1Leavitt, J. and Christenfeld, N., ‘‘Story Spoilers Don’t Spoil Stories,” Psychological Science, published OnlineFirst, August 12, 2011.
Story |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
With Spoiler |
4.7 |
5.1 |
7.9 |
7 |
7.1 |
7.2 |
7.1 |
7.2 |
4.8 |
5.2 |
4.6 |
6.7 |
Original |
3.8 |
4.9 |
7.4 |
7.1 |
6.2 |
6.1 |
6.7 |
7 |
4.3 |
5 |
4.1 |
6.1 |
Give the test statistic and the -value.
Round your answer for the test statistic to two decimal places and your answer for the -value to four decimal places
test statistic Entry field with incorrect answer
-value Entry field with incorrect answer
Give the conclusion.
Reject .
Do not reject .
Is there evidence of a difference in enjoyment rating based on whether or not there is a spoiler?
No evidence of a difference
There is evidence of a difference and mean enjoyment is greater without a spoiler
There is evidence of a difference and mean enjoyment is greater with a spoiler
from above test statistic t =4.90
p value =0.0005
reject Ho
There is evidence of a difference and mean enjoyment is greater with a spoiler
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