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Concept explainers
a.
Identify the two qualitative variables measured for each Honda Accord collision claim.
b.
Create a
c.
State the null and alternative hypothesis for testing whether injury rate for collision claims depends on Accord model (hybrid or conventional).
d.
Find the expected number of claims in each cell of the contingency table when the null hypothesis is true.
e.
Find the chi-square test statistic and compare the answer with the test statistic shown on the given SAS output.
f.
Find the rejection region for the test using
g.
Write an appropriate conclusion using the rejection region method and the p-value.
h.
Find the 95% confidence interval for the difference between the injury rates of conventional and hybrid Honda Accords.
Determine whether the injury rate for hybrid Accords is less than the injury rate for conventional Accords using the interval.
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Chapter 13 Solutions
EP STATISTICS-MYLAB STATISTICS W/ETEXT
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