EBK BUSINESS STATISTICS
7th Edition
ISBN: 9780134462783
Author: STEPHAN
Publisher: PEARSON CUSTOM PUB.(CONSIGNMENT)
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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.
State the conclusion
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…
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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 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_forwardKickstarter is an American public-benefit corporation based in Brooklyn, New York, that maintains a global crowdfunding platform focused on creativity and merchandising. The company's stated mission is to "help bring creative projects to life". Kickstarter has reportedly received more than $1.9 billion in pledges from 9.4 million backers to fund 257,000 creative projects, such as films, music, stage shows, comics, journalism, video games, technology and food-related projects. Please use the correct mathematical models to analyze the key factor which drive project success.arrow_forwardWall Street performs a sort of “financial alchemy” enabling the individual to benefit from institutions lending money to them, according to Adam Davidson, cofounder of NPR’s “Planet Money.” Individuals can invest small amounts of their money in a 401(k), pooling their capital and spreading the risk. Assume you invested in Fidelity New Millennium, FMILX, one of the “10 Best Rated Funds” by The Street. How much would you pay for 70 shares if the 52-week high is $34.57, the 52-week low is $28.90, and the NAV is $42.59? (Round your answer to the nearest cent.) Amount paid $ __________arrow_forward
- The 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_forwardYou may need to use the appropriate technology to answer this question. The Wall Street Journal's Shareholder Scoreboard tracks the performance of 1,000 major U.S. companies. The performance of each company is rated based on the annual total return, including stock price changes and the re investment of dividends. Ratings are assigned by dividing all 1,000 companies into five groups from A (top 20%), B (next 20%), to E (bottom 20%). Shown here are the one- year ratings for a sample of 60 of the largest companies. A C 6 8 14 20 12 Do the largest companies differ in performance from the performance of the 1,000 companies in the Shareholder Scoreboard? Use a = 0.05. State the null and alternative hypotheses. Ho: The proportions of the largest companies compared to the 1,000 companies are the same for at least one of the five groups. H: The proportions of the largest companies compared to the 1,000 companies are different for all five groups. Ho: The proportions of the largest companies…arrow_forwardYou may need to use the appropriate appendix table or technology to answer this question. Advertisers contract with internet service providers and search engines to place ads on websites. They pay a fee based on the number of potential customers who click on their ad. Unforțunately, click fraud-the practice of someone clicking on an ad solely for the purpose of driving up advertising revenue–has become a problem. Businessweek reports that 4C percent of advertisers claim they have been a victim of click fraud. Suppose a simple random sample of 390 advertisers will be taken to learn more about how they are affected by this practice. (Round your answers to four decimal places.) (a) What is the probability that the sample proportion will be within ±0.04 of the population proportion experiencing click fraud? (b) What is the probability that the sample proportion will be greater than 0.45?arrow_forward
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