Select the definition of a block design experiment. a study in which all subjects are randomly assigned to treatment groups, allowing for comparison of those treatments a study in which subjects are randomly assigned to treatment groups and each treatment group is further divided into groups containing similar individuals a study in which subjects are separated into similar groups and then subjects within each group are randomly assigned to treatments a study in which researchers divide subjects into similar groups and observe variables of interest within each group a study in which one subject receives two treatments in random order

a study in which subjects are separated into similar groups and then subjects within each group are randomly assigned to treatments

Explanation: In simple words, it refers to an experiment in which the experimenter divides the subject into various sub groups for the ease of research. the groups divided are termed as blocks.

The blocks are prepared in such a way that variability remains low within the blocks however in between blocks it could be relatively high.

the old way of life was represented by superstition, an angry god, and absolute submission to authority. the thinkers of the age of reason ushered in a new way of thinking. this new way championed the accomplishments of humankind. individuals did not have to accept despair. science and reason could bring happiness and progress. kings did not rule by divine right. they had an obligation to their subjects. europeans pondered the implications for nearly a century. americans put them into practice first.