At school debate tournament hat of teams were osked to wear suits und bes and th

Question

At school debate tournament hat of teams were osked to wear suits und bes and the wins and losses a wearing suits as for teams wearing ieans 22 28 T-shirt28 22 Ha: The proportion of wins is the same for teams wearing suits as H.: The proportions are different Test statistic: x2-1440 Critical value: x2-3.841 for teams wearing jeans a) critical value, we reject H, and conclude that the Since the test statistic is less than the proportion of wins differs for the teams wearing suits Since the test statistic is less than the critical value, we fail to reject He. There is not enough evidence to conclude that the proportion of wins differs for the teams wearing suits vers those wearing jeans. and those wearing jeans. e) Since the test statistic > 1, we reject , and conclude that the proportion of wins differs for the teams wearing suits and those wearing jeans d) Since the critical value , we reject He and conclude that the proportion of wins diners for the teams wearing suits and those wearing jeans. e) Since the test statistic is less than the critical value, we accept Ho and conclude that the proportion of wins is the same for the teams wearing suits and for those wearing jeans. 6. Use the appropriate table to find Plx2 2 7.38) assuming df-2 a) 0.oso b) 0.500 0.025 d) 0.975 e) 0.950 Which of the following is NOT a property of the relative risk? a) The relative risk is a number between 0 and 1 7. b) The relative risk can equal any nonnegative number c) Two values for the relative risk represent the same strength of association, but in opposite directions, when one value is the reciprocal of the other d) Values farther from 1.0 represent stronger associations. e) When p1 p2, the variables are independent and the relative risk- 1.0 An agricultural company would like to predict cotton yield per acre in a certain area using rainf inches). Identify the response variable a) variety of cotton grown b) the agricultural company c) rainfall in inches d) farm size e) yield per acre 8.

Explanation / Answer

I am going to answer only 5 question and you are requested to upload one question at a time.

The correct option for 5th question is (b)

Explanation: As in the testing of hypothesis we have two hypothesis null and alternative and we conduct a test to check whether our null hypothesis is true based on the data and assumed level of significane. Here in the question the test statistic value is less than tabulated value based on may be 5% level of significance. Hence in this case we do not find any strong evidence to reject the hypothesis. On the other hand if we have different observations from the same situation or different level of significance then it may be possible that our test statistic value can be greater than tabulated values. So while making comment on the result in the question 5 one can only say that based on the values and assumed level of significance one do not find any evidence to reject H0.

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