Four students found the mean of the data set 26, 31, 39, 30, 16, 16, 18, 38. which student found the correct mean? a ashrita’s work: startfraction 26 + 31 + 39 + 30 + 16 + 16 + 18 + 38 over 8 endfraction = startfraction 214 over 8 endfraction = 26.75
b collette’s work: startfraction 26 + 38 over 2 endfraction = startfraction 64 over 2 endfraction = 32 c daniel’s work: startfraction 26 + 31 + 39 + 30 + 18 + 38 over 7 endfraction = startfraction 198 over 7 endfraction = 28.29 d lora’s work: startfraction 30 + 16 over 2 endfraction = startfraction 46 over 2 endfraction = 23

Me, the vertices of quadrilateral coat are c(2,0), o(7,0), a(7,2) and t(2,2). prove that coat is a rectangle.

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Afriend of mine is giving a dinner party. his current wine supply includes 10 bottles of zinfandel, 8 of merlot, and 11 of cabernet (he only drinks red wine), all from different wineries. (a) if he wants to serve 3 bottles of zinfandel and serving order is important, how many ways are there to do this? ways (b) if 6 bottles of wine are to be randomly selected from the 29 for serving, how many ways are there to do this? ways (c) if 6 bottles are randomly selected, how many ways are there to obtain two bottles of each variety? ways (d) if 6 bottles are randomly selected, what is the probability that this results in two bottles of each variety being chosen? (round your answer to three decimal places.) (e) if 6 bottles are randomly selected, what is the probability that all of them are the same variety? (round your answer to three decimal places.)