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Chapter 12 #22 22. Online banking A national survey indicated that 30% of adults conduct their banking online. It also found that 40% are younger than 50, and that 25% are younger than 50 and con- duct their banking online. What is the probability that a person is younger than 50 given that she uses online banking? Edit Insert Format Tools TableChapter 13 #38a 38. Junk mail Direct mail advertisers send solicitations (a.k.a. "junk mail") to thousands of potential customers in the hope that some will buy the company's product. The acceptance rate is usually quite low. Suppose a company wants to test the response to a new flyer, and sends it to 1000 people randomly selected from their mailing list of over 200,000 people. They get orders from 123 of the recipients. a) Create a 904 confidence interval for the percentage of people the company contacts who may buy something.Chapter 14 #36b 36. Flights on time 2016 revisited Will your flight get you to your destination on time? The Bureau of Transportation Statis- tics reported the percentage of flights that were delayed each month from 1994 through June of 2016. Here's a histogram, along with some summary statistics: 50 270 of Months 19.696 S 4.214 10 15 20 25 30 Delayed % b) Find a 995 confidence interval for the true percentage of flights that arrive late.QUESLION 2 Chapter 14 #38 38. Hot dogs A nutrition lab tested 40 hot dogs to see if their mean sodium content was less than the 325-mg upper limit set by regulations for "reduced sodium" franks. A 90% confidence interval estimated the mean sodium content for this kind of hot dog at 317.2 to 326.8 mg. Given this, what would you tell the lab about whether the hot dogs satisfy the regulation