birddiversityandhabitat(存儲版)
【正文】 tus) and seeds. Data Collected ? U of A ? Sparrow – 81 ? Pigeon – 19 ? Catalina Mountains ? Mourning Dove – 48 ? Sparrow – 12 ? Cactus Wren – 7 ? Quail – 27 ? Road Runner – 2 ? Pigeon – 4 Bar Graph of Bird Count Results B i r d Co u n t v s S p e c i e s0810 0 0194812727240102030405060708090M o u r n i n gD o v eS p a r r o w C a c t u s W r e n Q u a i l R o a d R u n n e r P i g e o nS p e c i e sBird CountU o f A B i r d sC a t a l i n a B i r d sCalculations: Using Inference on Proportions for Two Independent Samples Ztest ? State Hypothesis ? Ho : p1 = p2 ? Ha : p1 p2 ? Find Test Statistic Z ? x = number of species counted ? n = total birds counted in habitat ? Z = ? Find P Value ? P = P(Z z) ? P = P(Z ) = ? State Conclusion ? We reject our null hypothesis. We have reason to believe that more Mourning Doves habitat the Catalina Mountains versus the University of Arizona campus. ? This can be concluded since our PValue is smaller than our significance level of . ????????????212111)?1(?)??(nnppppznxpi ??2121?nnxxp??? ?????? ????10011001)()(zResults from Ztest Bird Species Null/Alternate Hypothesis Z Value P Value Conclusion Mourning Dove Ho : p1 = p2 Ha : p1 p2 Reject Null Hypothesis Cactus Wren Ho : p1 = p2 Ha : p1 p2 Reject Null
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