Essay
Use the following to answer the questions below:
February 12, 2009 marked the 200th anniversary of Charles Darwin's birth. To celebrate, Gallup, a national polling organization, surveyed 1,018 Americans about their education level and their beliefs about the theory of evolution. The survey results are displayed in the provided two-way table. Note that the expected counts for most cells appear in parentheses.
-A study to investigate the dominant paw in cats was described in the scientific journal Animal Behaviour. The researchers used a random sample of 42 domestic cats. In this study, each cat was shown a treat (5 grams of tuna), and while the cat watched, the food was placed inside a jar. The opening of the jar was small enough that the cat could not stick its head inside to remove the treat. The researcher recorded the paw that was first used by the cat to try to retrieve the treat. This was repeated 100 times for each cat (over a span of several days). The paw used most often was deemed the dominant paw.
The researchers want to determine if there is a significant association between sex of the cat and dominant paw. Computer output from the analysis is provided. Is it appropriate to perform the chi-test to test for an association between sex and dominant paw in cats? If so, perform the test. If not, briefly explain why.
All expected cell counts are larger than 5, so it is appropriate to use the chi-square test.
Test Statistic: 30.927
Degrees of freedom: 1
p-value ≈ 0
There is very strong evidence that sex and the dominant paw in cats are related.
Correct Answer:

Verified
: Sex and dominant ...View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
Correct Answer:
Verified
View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
Q30: Use the following to answer the questions
Q31: Use the following to answer the questions
Q32: Use the following to answer the questions
Q33: Use the following to answer the questions
Q34: Use the following to answer the questions
Q36: Use the following to answer the questions
Q37: Use the following to answer the questions
Q38: Use the following to answer the questions
Q39: Use the following to answer the questions
Q40: Use the following to answer the questions