On the first test in an introductory statistics class, most students did very well and only...
On the first test in an introductory statistics class, most students did very well and only a few did poorly (including a few who did very poorly). How would you describe the distribution of test scores?
1. Having a floor effect
2. Symmetrical
3. Positively skewed
4. Negatively skewed
Homework Answers
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On the first test in an introductory statistics class, most
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Give statistical evidence to support your conclusion.
Please show all work.
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The table below shows whether students in an introductory
statistics class like dogs and/or cats.
a) What is the marginal distribution (in %) of “liking
dogs”?
b) What is the conditional distribution (in %) of “liking dogs”
for students who like cats?
c) Do “liking dogs” and “liking cats” appear to be independent?
Give statistical evidence to support your conclusion.
Please show all work.
Doesn't Like Dogs 21 10 Likes Dogs Likes Cats Doesn't Like Cats 194 110
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