In hypothesis testing three approaches may be used No correc

In hypothesis testing, three approaches may be used: No correction needed; Bonferroni correction; The q value method. For each of the following four scenarios, which approach is appropriate A general linear model has eight explanatory variables, and we are interested in whether each of them has an significant effect. _______ Researchers see a linear trend in a scattcrplot of self-esteem score versus age, arid are interested in whether the slope of the line is significant. _________ In a completely randomized design, test whether the four paints for highway marking have the same level of reflectivity. ______ For each of the 193 countries in the United Nations, test whether there is a significant association between the average annual income and life expectancy (number of years) at birth in the past fifty years. We want to identify as many such countries as possible; in other words, we do not want to be too conservative in identifying candidate countries.___________

Solution

a)here we want to get an idea by using 8 explanatory variables so 8 tests total will be required where some might be accepted and some mivht be rejected.so all these significant effects are to be summed up to give an idea of whole

Population so here we use bonferronis method

d) here also we have to give idea about the whole population by doing several tests for each country in united states. And after gettijg all the results we have to use Bonferronis method

C)here no correction is needed

B) here