Chapter 12 Q7 correction. I got this answer wrong and I want to know why.

07 Section 12.6 Exercise 17 Qnation Hop For each of to bolowing worrion say whether to date should be tested in hongended or joined samples. Explain beefy pared anjuiswhat the pairing of An oildarcy depart daime fat a new uponomie doik chair makea typing of a computer tomminal easier and faint To but i 15 volunteer are blocked Living bon the new chat and their old chat, each volunteer teas a randomly selected passage for 2 minute and he number of comecl wards typed him corded. Choose The O A. The data should be treated an paired samples. Each par contents of fo number of compl words typed each minvia O B. The data should be treated as independent samples because the samples are random. C. The data should be treated as paired samples. Each par cprints of a via how wiing each chain Section 12.6 Exercise 17 Quistion Hop For each of the following sonerion, say whether the data should be treated as independent or paired samples. Explain briefly paired, explain what the poking Bj A developer wants to know I the howigs in two di anne neighborhoods have the same men" price the saleche 10 howiss from nad neighborhood of random and main Po nul hypobanks that the means are squid. Choose the corned answer takes O A. The data should be broiled as paired samples. Each pair costs of the pace of a house in each of the neighborhoods O B. The data should be treated in paired simplen. Each pair conghis of the man prices of silyrent neighborhoods PC. The data should be tried as indep 4) A manager wants to know Ife mac productivity of tee wonone is the same. For a random selection of 29 houn in the part month he compares the number of Huma produced by much workor in that hour. Choose the coned answer bilge * A. The data shoold be broiled as independent samples because the samples are mansion. B. The data should be treated as paired wimplen. Each pair conghts of an hour in which the productivity of the two worken in compared O C. The data should be treated as paired samplei. Each pair conchis of teo hours in which he number of hemi produced is compared