Question

3. In a different research project, you run a t-test to test the prediction that unladen African swallows fly faster than unladen European swallows. Would the results below allow you to reject your prediction for the Ho that there will be no difference in speed between the two species of birds? Explain why or why not. | African swallows swallows European 10.4 0.9 10 Mean speed (m/s) 15.2 Variance Observations df t Stat P(T<-t) two-tail0.236352 t critical two-tail 10 18 1.82309 2.15384

Answer 1

Answer Date: 16/01/2019 To test the hypothesis is that unladen African shallows fly faster than unladen European swallows at 5% significance level. The null and alternative hypothesis is, The t-test statisticsis, From the computer output, the t-test statistics is 1.823 The p-value for this test is, From the Computer output, thep-value for this test 0.2364 divide by 2 for right-tailedis 0.1182 Decision

The conclusion is that p-value in this context is greater than 0.05 which is 0.1182, so the significant. The result would not allow rejecting the prediction for null hypothesis is that there will be no difference in speed between the two spices of birds due to there is insufficient evidence to indicate that unladen African shallows fly faster than unladen European swallows