When surveys are administered, surveyors hope that the respondents give accurate answers. Does the mode of survey delivery affect answer accuracy? Researchers (Schober et al., 2015) had 634 participants agree to be interviewed on an iPhone and the participants were randomly assigned one of the four interview modes (human voice, human text, automated voice, automated text). One interview question asked whether the participants exercise less than once per week on a typical week (an example of a question in which a yes would be considered socially undesirable). The summarized data on the answers to this question are shown in the table and output from a simulation tool are provided.Human text Automated text Human voice Automated voice Total Yes 34 46 21 20 121 No 124 111 139 139 513 Total 158 157 160 159 634