a.
Compare the percentage of cell phone users who had a crash to the percentage of people who did not use a cell phone and had a crash.
Explain whether cell phones appear to be dangerous.
b.
Provide the null and alternative hypotheses for a test of the claim that having a crash is independent of cell phone use.
c.
Compute the
d.
Compute the value of the
e.
Compute the critical value of
f.
Draw the conclusions from the hypothesis test about whether the two variables are independent.
g.
Explain whether the conclusion from part (f) is consistent with the known fact about cell phone use and driving.
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Statistical Reasoning for Everyday Life (5th Edition)
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill