Question

In a sample of 590 domestic Kois, the average lifespan is 5.3 years with standard deviation 0.675. In a similar sample of 580 Japanese imported Kois, the average lifespan is 4.05 years with standard deviation 0.43. Let ? ?? represent he average lifespan of Domestic Kois and Japanese impo ed Kols respectivel t significance level 0.001, ls there strong evidence showing that domestic Kols and Japanese imported Kols generally don't have he same lifespan A) Using 2 decimal places fr z?, z?s,, and stom the two samples, find d and the combined standard error. SE,- d 1.25 S&?1.033-.-. Round your answer to 4 decimal places. B) State the Null and Altenate Hy Is this a test? Oright-tail Oone-tail O left-tail two-tail D) Find thet value of the sample: Round your aswer to 3 decimal places. E) Find the Degrees of Freedom of the samples: D. F 1108 F) Find the p-alue of d, the difference in sample means: p-value How does p ralue of the samples compare to 0.001? And are the eamples showing strong evidence to reject Op-rahue0.001, No. Op-value 0.001, Yes. ?p-value < 0.001, Yes. p-value 0.001, No. H Based on the gren samples. construct a 94.18 % con te1.894 dence merval to est mate he difference he average lifespan of Domestic ?13 and Japanese imported Kois d ?2). Round te to 3 decimal places. Round margin of error, E, to 2 decimal places.

I dont know how to get the degrees of freedom (the red box)

1168 is wrong anyway

Answer 1