Aging users are a growing proportion of computer users, and some developers of word processors see an opportunity to provide a special version for these users. Critics think that the current Word 7.0 in Windows is adequate for these users and the costs of a special version are not warranted. They have come to you to help design and test a special version for elderly users. a. Give three possible design changes you would make for elderly users and justify them. b. Choose one of these design changes for empirical evaluation and determine if these changes bring greater benefits for elderly as compared with benefits for other users. Describe in detail an experiment you would conduct if you had substantial resources and sufficient time. Describe the hypothesis, independent and dependent variables, how to select and assign subjects, number of subjects, training, main and interaction effects, and statistics you would use. Draw graphs or bar charts of the result you expect. 150-200 WORDS PLEASE