1.For the t-test on sex and tail length, what are the null and alternative hypot

Question

1.For the t-test on sex and tail length, what are the null and alternative hypothesis?

2.For the t-test on sex and tail length, what is your interpretation of the results?

x Snake Data Fit Y by X of Tail Length by Sex JMP oneway Analysis of Tail Length By Sex 4.5 3.5 2.5 Sex 4 Means and Std Deviations Std Err Level Number Mean Std Dev Mean Lower 95% Upper 95% 15 3.760000 0.638972 0.1 6498 3.406 11 15 4.61333 0.778154 0.20092 4,1824. 5.0443 t Test M-F Assuming unequal variances Difference 0.85333 t Ratio 3.28236 26.97884 Std Err Dif 0.25998 DF Upper CL Diff 38678 Prob ltl 0.0028* Lower CL Dif 0.31989 Prob t 0.0014 Confidence 0.95 Prob k t 0.9986 1.0 0.5 0.0 0.5 1.0

Explanation / Answer

null hypothesis: There is no difference between means of two groups

Alternative hyp: There is a difference between means of two groups

alpha:5%

b) Test statistic:

t =3.2824

COnclusion:

P value= 0.0028 <0.05 we reject the H0. Hence claim is significant.

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