Canvas X Researchers studying the number of electric fish species living in various part of Amazon basin was interested in whether tributaries affected the number of electric fish species in rivers, They counted the number of electric fish species upstream and downstream of a major tributary at different locations. Test the hypothesis that the average number of electric fish is the same in both streams at a =0.05. It is known that both population distributions are approximately normal. [3+4+3+2] Group Statistics Stream N Mean Std. Deviation Std. Error Mean Number of fish Upstream no. of fish 12 14.58 7.925 2.288 Down stream no. fish 12 18.58 6.259 1.807 Independent Samples Test Levene's Test for Equality of Vanances Hest for Equality of Means 95% Confidence Interval of the Difference Mean Sid. Error Sia Sig. (2-tailed) Difference Difference Lower Upper Number of fish Equal variances 1 201 285 -1.372 22 184 -4.000 2.915 -10.046 2.046 assumed Equal variances not 1.372 20.879 185 4.000 2915 10.065 2.065 assumed . Specify proper null and alternative hypotheses to perform the test. . What are the necessary assumptions for this test? Are they valid? . What is the t test statistic value? What is the degrees of freedom for this test? Specify the p-value for this test. . What is the conclusion of the test? Explain in the context of the