MAT122-2006SpringUC

MAT122-2006SpringUC - 8 TH MATH 122 UC FINAL EXAM MAY 2006...

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Unformatted text preview: 8 TH MATH 122 UC FINAL EXAM MAY 2006 Name . SUID . There are 7 questions in this booklet. Check that your exam booklet is complete. Answer the questions in the spaces provided in this exam booklet. Partial credit requires some correct and appropriate work. A sketch will be helpful in finding the critical region and the critical values. Question Points Score 1 14 2 14 3 20 4 14 5 14 6 9 7 15 Total 100 1. [14 pts] A cereal company claims that the mean sodium content in one serving ofits cereal is more than 230 mg. John, an employee workingfor a national health service is asked to test this claim. He finds that a random sample of 52 servings has a mean sodium content of 232 mg and a standard deviation of10 mg. Using a significance level of a 0.05, does John have enough evidence to reject the company's claim? 2. [14 pts] A certain economist conducted a survey of740 randomly selected rural households andfound that 290 ofthem have Internet access. She further conducted a survey of800 urban households andfound that 350 ofthem have Internet access. Use the of800 urban households andfound that 350 ofthem have Internet access....
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MAT122-2006SpringUC - 8 TH MATH 122 UC FINAL EXAM MAY 2006...

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