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. Kickstarter, one crowd funding website, reported that 124 of 355 technology crowd funding projects were successfully launched in the past year and 349 of 873 film and video crowd funding projects were successfully launched in the past year. (Data extracted from kickstarter.com/help/stats.)

a. Is there evidence of a significant difference in the proportion of technology crowd funding projects and film and video crowdfunding projects that were successful? (Use α = 0.05.)

b. Determine the p value in (a) and interpret its meaning.

c. Construct and interpret a 95% confidence interval estimate for the difference between the proportion of technology crowdfunding projects and film and video crowd funding projects that are successful.