How many questionnaires to mail? The probability that a person responds to a mailed questionnaire is .4. How many questionnaires should be mailed if you want to be reasonably certain that at least 100 will be returned?The post How many questionnaires to mail? The probability that a person responds to a mailed questionnaire… 1 answer below » appeared first on Empire Essays.How many questionnaires to mail? The probability that a person responds to a mailed questionnaire… 1 answer below » was first posted on April 21, 2022 at 11:35 pm.©2019 “Empire Essays”. Use of this feed is for personal non-commercial use only. If you are not reading this article in your feed reader, then the site is guilty of copyright infringement. Please contact me at [email protected]