Math

StatisticsQ&A LibraryThe following table shows the percentage of individuals in each age group who use an online tax program to prepare their federal income tax return (CompleteTax website, November 9, 2012). Age Online Tax Program (%) 18-34 16 35-44 12 45-54 10 55-64 8 65+ 2 Suppose a follow-up study consisting of personal interviews is to be conducted to deter- mine the most important factors in selecting a method for filing taxes. a. How many 18–34-year-olds must be sampled to find an expected number of at least 25 who use an online tax program to prepare their federal income tax return? b. How many 35–44-year-olds must be sampled to find an expected number of at least 25 who use an online tax program to prepare their federal income tax return? c. How many 651-year-olds must be sampled to find an expected number of at least 25 who use an online tax program to prepare their federal income tax return? d. If the number of 18–34-year-olds sampled is equal to the value identified in part (a), what is the standard deviation of the percentage who use an online tax program?Start your trial now! First week only $4.99!*arrow_forward*

Question

The following table shows the percentage of individuals in each age group who use an online tax program to prepare their federal income tax return (CompleteTax website, November 9, 2012). Age Online Tax Program (%) 18-34 16 35-44 12 45-54 10 55-64 8 65+ 2

Suppose a follow-up study consisting of personal interviews is to be conducted to deter- mine the most important factors in selecting a method for filing taxes.

a. How many 18–34-year-olds must be sampled to find an expected number of at least 25 who use an online tax program to prepare their federal income tax return? b. How many 35–44-year-olds must be sampled to find an expected number of at least 25 who use an online tax program to prepare their federal income tax return? c. How many 651-year-olds must be sampled to find an expected number of at least 25 who use an online tax program to prepare their federal income tax return? d. If the number of 18–34-year-olds sampled is equal to the value identified in part (a), what is the standard deviation of the percentage who use an online tax program?

1 Rating

Tagged in

Math

Statistics

Find answers to questions asked by students like you.

Q: The drug Prevnar is a vaccine meant to prevent bacterial meningitis. A randomized, double-blind clin...

A: Click to see the answer

Q: We want to know whether the variance of the aerobic capacity of smokers is greater than the variance...

A: Null and alternative hypotheses: Let σ12 and σ22 be the variance in the aerobic capacity of smokers ...

Q: You may need to use the appropriate appendix table or technology to answer this question. Consider t...

A: Hey, there! Since there are more than three sub-parts posted, we will answer first three sub-parts f...

Q: One sample T hypothesis test:μ : Mean of variableH0 : μ = 1967HA : μ < 1967Hypothesis test result...

A: Given information- Significance level, α = 0.05 One sample t hypothesis test-μ: Mean of variableH0: ...

Q: You work for the U.S. Food and Drug Administration. You have gotten word that a drug manufacturing i...

A: Construct the 96% confidence interval estimate for the mean amount of cold medication the company is...

Q: if np > or equal 5 and nq > or equal 5, estimate P (at least 9) with n= 13 and P=0.5 by using ...

A: Click to see the answer

Q: Only about 15% of all people can wiggle their ears. Is this percent different for millionaires? Of t...

A: Click to see the answer

Q: State the null hypothesis for: An experiment testing whether echinacea decreases the length of cold...

A: Null hypothesis: The null hypothesis states that there is no difference between populations or a set...

Q: In a survey1 of 1000 American adults conducted in April 2012, 43 % reported having gone through an e...

A: State the hypotheses. That is, there is no evidence to conclude that that the proportion of all Ame...

Q: A follow-up study will be conducted with a sample of 20 people from the 300 people who responded yes...

A: Hey, there! Thanks for posting the question. We consider the number of people said yes is 210 (in po...

Q: Use normal approximation to find the probability of the indicated number of voters. In this case, as...

A: It is given that 176 eligible voters aged 18-24 are randomly selected. While 22% of voters who were ...

Q: You choose an alpha level of .01 and then analyze your data. (a) What is the probability that you wi...

A: Type I error: A Type I error is the probability of rejecting the null hypothesis when it is true. It...

Q: 7. Battery life has a strong, negative, linear relationship with temperature. If the least-squares r...

A: Solution: 7. From the given information, the correlation between battery life and temperature is str...

Q: Suppose you are a (junk) bond broker who buys only bonds that have a 50% chance of default. You want...

A: It is given that, the probability of brokers who will default is 0.50.

Q: A significance test is performed and p = .20. Why can't the experimenter claim that the probability ...

A: Given information- p = 0.20 We have to explain why can't the experimenter claim that the probabili...

Q: A local school district claims that the number of school days missed by its teachers due to illness ...

A: Click to see the answer

Q: 10. The mosaic plot shows the distribution of favorite math class for students and teachers at East ...

A: From the given plot, Intro Stats Pre-Calc AP Calc AP Stats Students 100%-85%=15%...

Q: For this problem, carry at least four digits after the decimal in your calculations. Answers may var...

A: Click to see the answer

Q: Hello! I need help on this question on my study guide. Thank you, and appreciate the help!

A: From the question, Consider, Y is represents the commission salary on any given night. Fixed commiss...

Q: What is the minimal sample size needed for a 95% confidence interval to have a maximal margin of err...

A: It is given that the margin of error E is 0.1.

Q: The U.S. Geological Survey compiled historical data about Old Faithful Geyser (Yellowstone National ...

A: Click to see the answer

Q: Many track hurdlers believe that they have a better chance of winning if they start in the inside la...

A: State the appropriate null hypothesis. Null hypothesis: Alternative hypothesis:

Q: How do I use technology to figure out the p-value either StatCrunch or a T-84 calculator)? Please sh...

A: Hypotheses: The aim is to check whether the sample evidence suggest that more than 2.4% of this dr...

Q: How to Compute the standard error of a slope?

A: Click to see the answer

Q: if 14 jurors are randomly selected from a population where 44% are minorities, what is the probabili...

A: Obtain the probability that 2 or fewer jurors will be minorities. The probability that 2 or fewer ju...

Q: You may need to use the appropriate appendix table or technology to answer this question. Consider t...

A: The given hypotheses are as follows: H0: µ ≤ 50. Ha: µ > 50. The sample size is 60 and the popula...

Q: please answer the following question thank you

A: It is given that:

Q: Hello! I need help on this question on my study guide. Thank you, and appreciate the help!

A: According to the Principle of Compounding, if a quantity Q increases at the rate of r% per time peri...

Q: A movie based on a best-selling novel was recently released. Six hundred viewers of the movie, 235 o...

A: Click to see the answer

Q: By using formula for a regression equation is Y' = 3X - 2. What would be the estimated Y score for a...

A: Click to see the answer

Q: A poll is taken in which 393393 out of 600600 randomly selected voters indicated their preference fo...

A: Obtain the 95% confidence interval estimate for the proportion. The 95% confidence interval estimate...

Q: Forty-three percent of Americans use social media and other websites to voice their opinions about t...

A: Click to see the answer

Q: In west Texas, water is extremely important. The fllowing data represent pH levels in ground water f...

A: The frequency distribution for the pH of ground water in 102 wells is constructed by using the follo...

Q: (a) Find ?z such that the proportion of observations that are less than ?z in a standard normal dist...

A: a) Thus, the required z value is -0.55.

Q: A random sample of 360 married couples found that 284 had two or more personality preferences in com...

A: Click to see the answer

Q: What is the two-tailed probability value testing the null hypothesis that the population mean is 0? ...

A: Click to see the answer

Q: A hypothesis test is conducted with H0:μ=46 and H1:μ≠46. A simple random sample of size n=68 is draw...

A: Given information- Sample size, n = 68 Sample mean, x-bar = 52 Sample standard deviation (s) = 15 Hy...

Q: Find the critical value(s) and rejection region(s) for the indicated t-test, level of significanc...

A: Click to see the answer

Q: A simple random sample of size three x1, X, and x3 is drawn from a population with mean u and varian...

A: From the given information, 1) An estimator are said to be unbiased if E(x) =µ. Hence, it is biase...

Q: Suppose that 60% of people in the population support raising taxes to pay for wetlands preservation....

A: Click to see the answer

Q: A population of values has a normal distribution with μ=175.9 and σ=29.7. You intend to draw a rando...

A: It is given that the mean and standard deviation are 175.9 and 29.7, respectively. The sample size (...

Q: For a weekly town council meeting in a certain town, the distribution of the duration of the meeting...

A: From the given information, x-bar 1 is represents the average duration town council meetings, and le...