0 Answer

data Genius

#### A PHP Error was encountered

Severity: Notice

Message: Undefined index: userid

Filename: views/question.php

Line Number: 192

Backtrace:

File: /home/noqkocv1izd6/public_html/application/views/question.php

Line: 192

Function: _error_handler

File: /home/noqkocv1izd6/public_html/application/controllers/Questions.php

Line: 416

Function: view

File: /home/noqkocv1izd6/public_html/index.php

Line: 315

Function: require_once

data Genius
Punditsdkoslkdosdkoskdo

## Calculate the sample size needed to construct the confidence interval for mean given

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.