For STUDY C, which of the following is an error found in the passage?
Evaluating the relationship between sleep and stress should not be done with a
Evaluating the effectiveness of the practice questions on exam success should
not be done using a two-sample t-test.
The researchers have drawn an incorrect scientific
conclusion about the p-
value for the effectiveness of the practice questions on exam success.
Use the following study to answer questions 13, 14 & 15.
Airbnb is an accommodation-sharing platform that relies heavily on guest ratings.
Interestingly, the distribution of ratings (shown below) is not equal across the possible
scores and is also not Normally distributed (5.0 is excellent, 1.0 is poor).
of accommodations in each category is:
Rank 5.0 is 46.3%
Rank 4.5 is 41.1%
Rank 4.0 is 10.3%
Rank 3.5 is 1.7%
Rank 3.0 is 0.3%
Rank 2.5 is 0.2%
Rank 2.0 is 0.1%
Rank 1.5 is 0%
Rank 1.0 is 0%
If you took repeated samples of potential accommodations for STUDY D, which of
the following statements about the distribution of the mean ratings would be