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Mathematics, 19.02.2020 01:54 vanessacasillas452
Country Financial, a financial services company, uses surveys of adults age and older to determine if personal financial fitness is changing over time (USA Today, April 4, 2012). In February of 2012, a sample of adults showed indicating that their financial security was more than fair. In February of 2010, a sample of adults showed indicating that their financial security was more than fair.
a. State the hypotheses that can be used to test for a significant difference between the population proportions for the two years.
- Select your answer -greater than 0greater than or equal to 0less than 0less than or equal to 0equal to 0not equal to 0Item 1
- Select your answer -greater than 0greater than or equal to 0less than 0less than or equal to 0equal to 0not equal to 0Item 2
b. What is the sample proportion indicating that their financial security was more than fair in 2012? Round your answer to two decimal places.
In 2010? Round your answer to two decimal places.
c. Conduct the hypothesis test and compute the -value. Round your answer to four decimal places.
-value =
At level of significance, what is your conclusion?
The input in the box below will not be graded, but may be reviewed and considered by your instructor.
d. What is the confidence interval estimate of the difference between the two population proportions? Round your answers to four decimal places.
Confidence Interval ( to )
e. Based on your conclusion of the previous question, can you say the population proportion of adults saying that their financial security is more than fair has increased or decreased?
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