The number of callers that did not consent to the survey is 40 callers.
<h3>Number of callers that did not consent to the survey</h3>
Using this formula
Number of caller=Callers×(1-Percentage of those that solicited)÷Callers at conclusion survey
Let plug in the formula
Number of caller=400 ×(1-20%)÷8
Number of caller=400 ×80%÷8
Number of caller=320÷8
Number of caller=40 callers
Therefore the The number of callers that did not consent to the survey is 40 callers.
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