1 It is more difficult to reject a null hypothesis if we use

1) It is more difficult to reject a null hypothesis if we use a 10% level of significance compared with a 5% level of significance. True or False

2) When calculating a correlation coefficient between two continuous variables, the scales on which the variables are measured affect the value of the correlation coefficient. True or False

3) In logistic regression, the predictors are dichotomous, and the outcome is a continuous variable.True or false

Solution

a) false, 10% level is weaker, and probability of type I error =0.1 is more than 0.05

b) false, correlation is scale free

c) false, the outcome is dichotomous, and predictors may be continous as well as dichotomous.