EP BUSINESS STATISTICS:FIRST COURSE-ACC
8th Edition
ISBN: 9780135179802
Author: Levine
Publisher: PEARSON CO
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One of the most impressive, innovative advances in online fundraising over the past decade is the rise of crowd-funding websites. While features differ from site to site, crowd-funding sites are websites that allow you to set up an online fundraising campaign based around a fundraising page, and accept money directly from that page using the website's own credit card processor. A certain crowd-funding website reported that 131 of 357 technology crowd-funding projects were successfully launched in the past year and 345 of 872 film and video crowd-funding projects were successfully launched in the past year.
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One of the most impressive, innovative advances in online fundraising over the past decade is the rise of crowd-funding websites. While features differ from site to site, crowd-funding sites are websites that allow you to set up an online fundraising campaign based around a fundraising page, and accept money directly from that page using the website's own credit card processor. A certain crowd-funding website reported that 131 of 357 technology crowd-funding projects were successfully launched in the past year and 345 of 872 film and video crowd-funding projects were successfully launched in the past year.
a. Is there evidence of a significant difference in the proportion of technology crowd-funding projects and film and video crowd-funding projects that were successful? (Use
α = 0.01.)
a) State the null and alternative hypotheses, where π1 is the population proportion of successful technology crowd-funding projects and π2 is the population proportion of successful…
One of the most impressive, innovative advances in online fundraising over the past decade is the rise of crowd-funding websites. While features differ from site to site, crowd-funding sites are websites that allow you to set up an online fundraising campaign based around a fundraising page, and accept money directly from that page using the website's own credit card processor. A certain crowd-funding website reported that 131 of 357 technology crowd-funding projects were successfully launched in the past year and 345 of 872 film and video crowd-funding projects were successfully launched in the past year.
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- One of the most impressive, innovative advances in online fundraising over the past decade is the rise of crowd-funding websites. While features differ from site to site, crowd-funding sites are websites that allow you to set up an online fundraising campaign based around a fundraising page, and accept money directly from that page using the website's own credit card processor. A certain crowd-funding website reported that 127 of 344 technology crowd-funding projects were successfully launched in the past year and 355 of 890 film and video crowd-funding projects were successfully launched in the past year. Complete parts (a) through (c) below. Part 1 Is there evidence of a significant difference in the proportion of technology crowd-funding projects and film and video crowd-funding projects that were successful? (Use α= 0.01.) a. State the null and alternative hypotheses, where π1 is the population proportion of successful technology crowd-funding projects and π2 is…arrow_forwardOne of the most impressive, innovative advances in online fundraising over the past decade is the rise of crowd-funding websites. While features differ from site to site, crowd-funding sites are websites that allow you to set up an online fundraising campaign based around a fundraising page, and accept money directly from that page using the website's own credit card processor. A certain crowd-funding website reported that 132 of 358 technology crowd-funding projects were successfully launched in the past year and 353 of 889 film and video crowd-funding projects were successfully launched in the past year. Calculate the test statistic and p-value.arrow_forwardThe Bennett Distribution Company, a subsidiary of a major home appliance manufacturer, wants to forecast sales for next year. The Atlantic Coast branch, with current sales of $193.8 million, is expected to achieve sales growth of 7.25%; the Midwest branch, with current sales of $79.3 million, is expected to have a increase of 8.20%, and that the Pacific Coast branch, with current sales of $57.5 million, increase its sales 7.15%. What is the predicted average growth rate in sales for the next year? Select one: Or a. The predicted average rate in sales for the next year is 7.46% Or b. The predicted average rate in sales for the next year cannot be calculated due to lack of information O c. The predicted average rate in sales for the next year is 22.6% Or d. The predicted average rate in sales for the next year is 7.53% 6arrow_forward
- University researchers published a working paper. One of the objectives of the study was to determine whether ride-share drivers actually make a profit.arrow_forwardThe Majoring in Money study by Sallie Mae from December 2015 showed that most college students manage their credit cards in a reasonable way. It showed that almost two-thirds of students pay their credit card balance in full every month and 25% of students who own credit cards make partial payments that exceed the minimum amount due. You are curious to find out if credit card payment behavior of students has changed since 2015 and collect data from a random sample of 370 students. You find that 71 students are making partial payments on their credit cards that exceed the minimum amount due. Using α=0.01, complete parts a and b below.arrow_forwardAccording to Zillow.com, the median sale price for homes in January for South Carolina, California, and Virginia over the last three years is given in the table below (measured in $100,000). able South Carolina California Virginia 2018 183 534 98 2019 193 555 94 2020 216 569 85 In South Carolina, realtors take 5.4% of the sale price on average as part of their commission. The average realtor commission rates in California and Virginia are 4.9% and 5.3%, respectively. Use matrix multiplication to find the total earned by realtors from their commissionsarrow_forward
- Tiger Funds Ltd. operates a number of mutual funds in high technology and in financial sectors. Hussein Roberts is a fund manager who runs a major fund that includes a wide variety of technology stocks. As fund manager he decides which stocks should be purchased for the mutual fund. The compensation plan for fund managers includes a first-year bonus for each stock purchased by the manager that gains more than 10% in the first six months it is held. Of those stocks that the company holds, 40% are up in value after being held for two years. In reviewing the performance of Mr. Roberts, they found that he received a first-year bonus for 60% of the stocks that he purchased that were up after two years. He also received a first-year bonus for 40% of the stocks he purchased that were not up after two years.What is the probability that a stock will be up after two years given that Mr. Roberts received a first-year bonus?arrow_forwardA ticket between Corellia and Dantooine (located in a galaxy far far away) sells for $150. The plane can hold 100 people. It costs $8000 to fly an empty plane. Each person on the plane incurs variable costs of $30 (for food and fuel). If the flight is overbooked, anyone who cannot get a seat receives $300 in compensation. On average, 95% of all people who have a reservation show up for the flight. To maximize profit, how many reservations for the flight should you book? Hint: You can assume that the number of people that show up for a flight follows a binomial random variable.arrow_forwardBurkina Faso, a landlocked country in West Africa, has the lowest adult literacy rate in the world (25.3%). Over the past 15 years, the government has focused heavily on improving access to education across the country. Between 2008 and 2015, the primary school completion rate rose from 40% to 60%, and the high school completion rate doubled over the same period from 15% to 30%. Despite these encouraging statistics, children in rural areas, especially girls, continue to have limited access to quality education. You put together a survey to collect information on the following variables and you are ready to analyze: Gender Age at last birthday Distance from school Level of education (Primary, Secondary, Post-Secondary) Discuss what measure of central tendency is the most appropriate for each variable making sure to explain why.arrow_forward
- Although Social Security is a problem, some projections indicate that there's a much bigger time bomb ticking in the federal budget, and that's Medicare. In 2000, the cost of Social Security was 5.48% of the gross domestic product, increasing by 0.04% of the GDP per year. In 2000, the cost of Medicare was 1.84% of the gross domestic product, increasing by 0.17% of the GDP per year. (Source: Congressional Budget Office) a. Write a function that models the cost of Social Security as a percentage of the GDP x years after 2000. b. Write a function that models the cost of Medicare as a percentage of the GDP x years after 2000. c. In which year will the cost of Medicare and Social Security be the same? For that year, what will be the cost of each program as a percentage of the GDP? Which program will have the greater cost after that year?arrow_forwardNew legislation passed in 2017 by the U.S. Congress changed tax laws that affect how many people file their taxes in 2018 and beyond. These tax law changes will likely lead many people to seek tax advice from their accountants (The New York Times). Backen and Hayes LLC is an accounting firm in New York state. The accounting firm believes that it may have to hire additional accountants to assist with the increased demand in tax advice for the upcoming tax season. Backen and Hayes LLC has developed the following probability distribution for number of new clients seeking tax advice. x f(x) 20 0.05 25 0.20 30 0.25 35 0.15 40 0.15 45 0.10 50 0.10 b. What is the probability that Backen and Hayes LLC will obtain 40 or more new clients (to 2 decimals c. What is the probability that Backen and Hayes LLC will obtain fewer than 35 new clients (to 2 decimals)? d.Compute the expected value, variance, and standard deviation of (to 2 decimals). Expected value…arrow_forwardAccording to a study administered by the National Bureau of Economic Research, half of Americans would struggle to come up with $2000 in the event of a financial emergency. The majority of the 1900 Americans surveyed said they would rely on more than one method to come up with emergency funds if required. In the survey, 397 people said that they "certainly" would not be able to cope with an unexpected $2000 bill if they had to come up with the money in 30 days, and 553 people said they "probably" would not be able to cope. Step 1 of 2 : What percentage of Americans "certainly" would not be able to produce $2000 in the event of an emergency according to the study? Round your answer to one decimal place, if necessary.arrow_forward
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