Country Financial, a financial services company, uses surveys of adults age and older to determine whether personal financial fitness is changing over time. A recent sample of adults showed indicating that their financial security was more than fair. Just a year prior, a sample of adults showed indicating that their financial security was more than fair. Required:
a. State the hypotheses that can be used to test for a significant difference between the population proportions for the two years.
b. Conduct the hypothesis test and compute the p-value. At α= 0.05 level of significance what is your conclusion?
c. What is the 95% confidence interval estimate of the difference between the two population proportion?
d. What is the sample proportion indicating that their financial security was more that fair in 2012?