Mathematics, 28.11.2019 04:31 emmazhu1106
The difference in proportions is p1 - p2 = 0.05 (fraternity members minus non-fraternity members), and the standard error is 0.08. the z-score for this difference in sample proportions is 0.885.
which of the following is the most appropriate conclusion?
a) there is a statistically significant difference between the proportion of fraternity members who have used cognition-enhancing drugs and the proportion of non-fraternity members who have used cognition-enhancing drugs.
b) there is not a statistically significant difference between the proportion of fraternity members who have used cognition-enhancing drugs and the proportion of non-fraternity members who have used cognition-enhancing drugs.
c) we do not have enough information to make a conclusion about the difference between the proportion of fraternity members who have used cognition-enhancing drugs and the proportion of non-fraternity members who have used cognition-enhancing drugs.
Answers: 1
Mathematics, 22.06.2019 05:00
At the beginning of the month, alexa’s bank account contained $4329.97. she then made two deposits of $452.28 each and a withdrawal of $279.34. she then went to the store and bought the new iphone x for $1,015 plus 6% sales tax. how much money does she have in her account now?
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Mathematics, 22.06.2019 10:30
Jordan computed in a two-way table the relative frequencies of the weather on practice days and game days during his football season. weather during football raining not raining practices 23% 77% games 13% 87% which statement best describes the relationship between the two variables? there appears to be an association because the relative frequencies by column are different. there appears to be an association because the relative frequencies by row are different. there does not appear to be an association because the relative frequencies by column are different. there does not appear to be an association because the relative frequencies by row are different.
Answers: 1
The difference in proportions is p1 - p2 = 0.05 (fraternity members minus non-fraternity members), a...
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