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Question 11) Suppose you work for an advertising company that is creating an ad for the re- lease of a new product. Your company creates two ads, one comedic ad and one dramatic ad You want to know if people respond differently to these two ads. To do this you create two focus groups each of 200 randomly chosen adults. To construct these focus groups you make sure that you sample 50 adults from age 18 - 25, 50 adults from age 25 - 45, 50 adults from age 50 - 65 and 50 adults age 65+. You show the first group the comedic ad and 134 of them report that they would buy your new product. You show the other 200 randomly chosen adults the dramatic ad and 112 of them report that they would buy your new product (a) Carry out a hypothesis test at α- 05 to test the claim! that people respond differently to the two ads. Make sure to confir the problem. (b) If you were worried about falsely claiming there was a difference between the two ads, would you want to retest at α-.01 or a-.1? Why? (c) What type of sampling did you use in your survey? n all necessary conditions. State your conclusion in context of

math   Statistics-And-Probability   
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For comedie «i, -200 134- Esmated poportion 아 people by na produck , R= 200 0.67 ror dramahead, n2=200 A112 0.56 Eshimared proport ot people buy npoduc , Pi 200 po+hovis , Ho 2- Altern삭e hypotheois, Ha. pl P2 2 Test statistic, z = 067-0 56 0%7(1-0:56) + 0-56(1-0:56) 2.00 2.0 O P-valu 0023 reject he nu hp evidanci in our sample to Support tha diHerenty to the too adn othuiis, Ho and condude that thane are enou dlaim that pesple vepond e claimins Je donot rejeu the nul hpotknis,H. . It »e thke the dvaua o001, owr P-valua becomes larga than e d-vwlua , in thar erewe donot (O .. wned systemate random Sampling in our Swwvey

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