Question

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(1 point) Commercialshermen working certain parts of the Atlantic Ocean sometimes in their efforts hindered by the presence of what deally, they would like to scare away the whales without frightening the fish One of the strategies being experimented with is to transmit under water the sounds of a killer wall. On the 57 occasions that technique has been thed, it worked 26 times that is the whales immediately left the area Experience has shown though that 40% of all whales s eda hing boats leave of the own accord probably to get away from the no rthe boat. Can it be argued on the basis of these data that transmitting underwater predator sound effective technique for cleaning fishing was of unwanted W es? Test the appropriate hypotheses using 0.01 significance level The test statistics The chical values The p-value is A. There is not suficient evidence to support the cam 3. There is sufficient evidence to support the cu

Answer 1

Ho: P = 0.40 H, :P 70.40 01 (one failed test) Right failed test n=57, X=26; 2=0.01 Sample Proportion (8) = 72 = 26 samb = 0.45614 Text Statistic, 0.45614 -0.40 (Px(1-P) - Tomox (1-0.40) 57 = 0.05614 0.064889 -0.86517 7 = 0.865 Critical value, P=0.01 Za = Zool = 12:326] (using z table] Thom rejection sejection region region o 2.326 z

- Po value = (1-Pr (Z 30.865)] using P- Galue ? 0:1935 Glealder

The result is not significant at P <Q=0.01 So, Po value is grader than the ofzool So, we fail to reject Ho Conclusion ! There is not Seifficient evidence to support claim. the