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H6_key - A'0 ~ Y)i 2.2~" 22:2" y~"-=-10"6...

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BI OL 23 00 Homework #6 Due Friday, No v em ber 6, 2009 Imagine that you measured sprint speed for ten lizards ea ch of two sympatric species. Speed units are in em/sec. Pe rf orm a I-test using the data below. Your null hypothesis is that there is no difference in sprint speed between the two lizard species. The alternative hyp ot hesis is that t he re is a difference. You must perf orm a I-test by computing a test statistic an d then comp ar ing it to a critical va lue using a 0.05 type-I error rate. You will be doing a tw o-tailed test as explained in class. Based on your analysis, you must decide whether to acc ep t or reject the null hypothesis. Please explain how you made your de cision. You must show all work fo r fu ll credi t. ..l11 .t Ra w Data - ~ YA , ' Species A Species B 19.7 19.9 2 3. 4 22.6 21.7 22.5 21 .3 21 .8 20.4 22 .5 23.4 24 .8 21.2 22. 3 22.5 21.0 21 .8 22.9 22.3 22.3 ::- 21.1t YA A,., ::
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