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Public Health and Nutrition

Rising costs caused many Americans to do without health insurance. A random sample of adults of various ethnicities was obtained and asked whether they had health insurance. The resulting data are given in the table below.

305_Table 06.jpg

a. Find a 95% confidence interval for the proportion of adults without health insurance for each group.

b. A government publication claims that the proportion of people without health insurance for the general population is 0.146. Using the confidence intervals in part (a), is there evidence that any group has a different population proportion without health insurance?

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