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Backtrace:
File: /home/statpmkj/public_html/application/views/question.php
Line: 212
Function: _error_handler
File: /home/statpmkj/public_html/application/controllers/Questions.php
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Function: view
File: /home/statpmkj/public_html/index.php
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Function: require_once
Calculate the sample needed to construct the confidence interval needed given the specified values.
C = 0.95, sigma = 7.8, and E=2
Assume that a preliminary sample has at least 30 members.