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IRS: Tax Returns Almost everyone files (or will someday file) a federal income tax return. A research poll for TurboTax. (a computer software package to aid in tax-return preparation) asked what aspect of filing a return people thought to be the most difficult. The results showed that
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Understanding Basic Statistics
- on december 17, 2010 the wilmington, north caroline StarNews carried on associated press report headlined "13 million get unexpected tax bill from Obama tax credit". The report said that the international revenue service reported that the average tax refund was $2,892 in the 2010 filing season, up from $2,663 in 2009. however, the number of refunds dropped by 3.5%, to 93.3 million. how many refunds were there in 2009 and in 2010?arrow_forwardSAT Math Suppose that scores on the SAT Math test are approximately normal with a mean of 500 and a standard deviation of 100. Let X denote the score on a randomly selected student. Use the Z table to find the following values.arrow_forwardTransport trade association conducted a survey of their members to determine what they felt were the important issues to be discussed with the management. The survey results showed that 74% felt that the job security was the important issue, while 65% felt that salary increment was an important issue. Of those who felt salary increment was an important issue, 60% also felt that job security was an important issue. What percentage of the members felt that both job security and salary increment were important? What percentage of the members felt that at least one of these two issues was important?arrow_forward
- Transport trade association conducted a survey of their members to determine what they felt were the important issues to be discussed with the management. The survey results showed that 74% felt that the job security was the important issue, while 65% felt that salary increment was an important issue. Of those who felt salary increment was an important issue, 60% also felt that job security was an important issue. i. What percentage of the members felt that both job security and salary increment were important? ii. What percentage of the members felt that at least one of these two issues was important?arrow_forwardSeveral years ago, two companies merged. One of the concerns after the merger was the increasing burden of retirement expenditures. An effort was made to encourage employees to participate in the 401(k) accounts. Nationwide, 62% of eligible workers participated in these accounts. The accompanying data table contains responses of 30 employees of the company when asked if they were currently participating in a 401(k) account. Complete parts a through d. Click the icon to view the data table. a. Determine the sample proportion of company workers who participate in 401(k) accounts. The sample proportion is (Round to three decimal places as needed.) b. Determine the sampling error if in reality the company workers have the same proportion of participants in 401(k) accounts as does the rest of the nation. The error is. (Round to three decimal places as needed.) c. Determine the probability that a sample proportion at least as large as that obtained in the sample would be obtained if the…arrow_forwardSeveral years ago, two companies merged. One of the concerns after the merger was the increasing burden of retirement expenditures. An effort was made to encourage employees to participate in the 401(k) accounts. Nationwide, 67% of eligible workers participated in these accounts. The accompanying data table contains responses of 30 employees of the company when asked if they were currently participating in a 401(k) account. Complete parts a through d. Click the icon to view the data table. a. Determine the sample proportion of company workers who participate in 401(k) accounts. The sample proportion is (Round to three decimal places as needed.) b. Determine the sampling error if in reality the company workers have the same proportion of participants in 401(k) accounts as does the rest of the nation. The error is . (Round to three decimal places as needed.) c. Determine the probability that a sample proportion at least as large as that obtained in the sample would be obtained if the…arrow_forward
- Several years ago, two companies merged. One of the concerns after the merger was the increasing burden of retirement expenditures. An effort was made to encourage employees to participate in the 401(k) accounts. Nationwide, 63% of eligible workers participated in these accounts. The accompanying data table contains responses of 30 employees of the company when asked if they were currently participating in a 401(k) account. Complete parts a through d. Click the icon to view the data table. a. Determine the sample proportion of company workers who participate in 401(k) accounts. The sample proportion is. (Round to three decimal places as needed.) b. Determine the sampling error if in reality the company workers have the same proportion of participants in 401(k) accounts as does the rest of the nation. The error is (Round to three decimal places as needed.) c. Determine the probability that a sample proportion at least as large as that obtained in the sample would be obtained if the…arrow_forwardSeveral years ago, two companies merged. One of the concerns after the merger was the increasing burden of retirement expenditures. An effort was made to encourage employees to participate in the 401(k) accounts. Nationwide, 63% of eligible workers participated in these accounts. The accompanying data table contains responses of 30 employees of the company when asked if they were currently participating in a 401(k) account. Complete parts a through d. Click the icon to view the data table. a. Determine the sample proportion of company workers who participate in 401(k) accounts. The sample proportion is. (Round to three decimal places as needed.) b. Determine the sampling error if in reality the company workers have the same proportion of participants in 401(k) accounts as does the rest of the nation. The error is (Round to three decimal places as needed.) c. Determine the probability that a sample proportion at least as large as that obtained in the sample would be obtained if the…arrow_forwardSuppose you took a survey designed to assess criminal justice students and their attitudes towards ending cash bail in California. You ask 100 students (randomly sampled) how much they'd be willing to pay to fund community supervision programs over the current cash bail system. There is another question that asks students if they believe reforming cash bail is a serious issue. Select all correct answers. The response variable is a student's belief that cash bail needs to be reformed. The reponse variable is the amount of tax a student is willing to pay to cover community supervision costs. Students answer yes or no to the question of whether they believe cash bail reform should occur. This means the samples are independent. Students answer yes or no to the question of whether they believe cash bail reform should occur. This means the samples are dependent.arrow_forward
- on december 17, 2010 the wilmington, north caroline StarNews carried on associated press report headlined "13 million get unexpected tax bill from Obama tax credit". The report said that the international revenue service reported that the average tax refund was $2,892 in the 2010 filing season, up from $2,663 in 2009. however, the number of refunds dropped by 3.5%, to 93.3 million. what was the percentage increase in the average tax refund from 2009 to 2010?arrow_forwardAn industrial/organizational psychologist wants to improve worker productivity for a client firm, but first he needs to gain a better understanding of the life of the typical white-collar professional. Fortunately, he has access to the 2008 Workplace Productivity Survey, commissioned by LexisNexis and prepared by WorldOne Research, which surveyed a sample of 650 white-collar professionals (250 legal professionals and 400 other professionals). One of the survey questions was, “How many hours do you work at your job on a typical workday?” For the subsample of legal professionals (n = 250), the mean response was M = 9.0 hours, with a sample standard deviation of s = 10.4 hours. The estimated standard error is sMM = . Use the following Distributions tool to develop a 99% confidence interval estimate of the mean number of hours legal professionals work on a typical workday. The psychologist can be 99% confident that the interval from to includes the unknown…arrow_forwardOn December 17, 2010, the Wilmington, North Carolina StarNews carried an Associated Press report headlined "13 million get unexpected tax bill from Obama tax credit". The report said that The Internal Revenue Service reported that the average tax refund was $2,892 in the 2010 filing season, up from $2,663 in 2009. However, the number of refunds dropped by 3.5 percent to 93.3 million. What was the percentage increase in the average tax refund from 2009 to 2010? $2,892 - $2,663= 229 ÷ $2,663= 0.08599324% was the percentage increase from 2009 to 2010. How many refunds were there in 2009 and in 2010? (Use the information given in the problem to find your answer.) c. The number of refunds decreased while the average refund increased, so you need some arithmetic to decide how the total dollar amount refunded changed from 2009 to 2010. Find that change in both absolute and percentage termsarrow_forward
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill