Suppose it is known that in a certain population, 5 percent of the population is colorblind. If a random sample of 10 people is drawn from this population, the mean of the variable is: Select one: O a. 0.5 O b. 5 O c. 0.475 O d. 0.25 If the outcome of event A is not affected by event B, then events A and B are said to be: Select one: O a. mutually exclusive. O b. Dependent. O c. collectively exhaustive. O d. Independent. If the correlation coefficient is 0.8, the percentage of variation in the dependent variable explained by the variation in the independent variable is: Select one: O a. 80%. O b. 0.80%. O c. 0.64%. O d. 64%.