Week 5 Homework Answers.docx - Homework Week 5 7.1.2 Ho...

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Homework Week 5 7.1.2: Ho: p=0.23 Ha: p<0.23 7.1.6: 1% b/c Type I error seems to have worse consequences than Type II. 7.2.4: Ho: p=0.23 Ha: p<0.23 α=0.05 ^ p =0.2242 z=-0.522 0.301 Fail to reject null. There is not enough evidence to support the claim that the proportion of complaints due to identity thefts is less than 23% in Alaska. 7.2.6: Ho: p=1/88 Ha: p>1/88 α=0.01 ^ p =0.01555 z=7.131 Reject the null. There is sufficient evidence to show that the proportion of children with ASD in AZ in 2008 is more than the national proportion. 7.3.6: Ho: µ=$60.29 Ha: µ<$60.29 α=0.05 t=-9.2284 Reject the null. There is enough evidence to show that the mean economic dynamism for a middle-income country Is less than $60.29, which is the mean for high income countries.

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