Question

10.56 In San Francisco, a sample of 3,106 wireless routers showed that 40.12 percent used encryption (to prevent hackers from intercepting information). In Seattle, a sample of 3,013 wireless routers showed that 25.99 percent used encryption.
(a) Set up hypotheses to test whether or not the population proportion of encryption is higher in San Francisco than Seattle.
(b) Test the hypotheses at α = .05.


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  • CreatedAugust 19, 2015
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