Question

Samantha is studying different species of irises. During her fieldwork, she recorded the length of the sepal in millimeters of two different species, I. setosa and I. virginica. She wants to know if the two species differ in sepal length or not. Using the software tool you prefer, perform a two-sample t-test for the difference between means to decide whether the two species of irises have different sepal lengths. You may find this list of software manuals helpful in computing your answers. Click to download the data in your preferred format. CrunchIt! CSV Excel JMP Mac Text Minitab PC Text R SPSS TI Calc Calculate the positive t-statistic. Express your answer to three decimal places. t = Calculate the p-value. Express your answer to four decimal places. p-value= What conclusion can you draw about the mean sepal length for each species of iris? Use the significance level of ?=0.05 to make your decision. Because the is ?=0.05, you the null hypothesis that the mean sepal lengths are equal. There is evidence to conclude that .

Answer 1

Ané: Jfven dato nSanple HeanSt Deu Setosa 63. 65 88 50 I virginica 5D 6.359 TesE Statisc - value -0 03 20 hen oC =0,05 le*e. eéé Irarn that nean SepaU n u Cava arne. Subtfctenteidance thab the cvi cancc. hene 1 ConClesion hat meané ane danen