Severity: Warning
Message: fopen(/home/answnniz/public_html/system/sessions/ci_sessionbcc6548e02e0dc349e33fc588c00ee87307015b6): failed to open stream: Disk quota exceeded
Filename: drivers/Session_files_driver.php
Line Number: 176
Backtrace:
File: /home/answnniz/public_html/index.php
Line: 315
Function: require_once
Severity: Warning
Message: session_start(): Failed to read session data: user (path: /home/answnniz/public_html/system/sessions)
Filename: Session/Session.php
Line Number: 143
Backtrace:
File: /home/answnniz/public_html/index.php
Line: 315
Function: require_once
Assume all the students' quiz 2 scores in last year's class is normally distributed with mean μ and variance 121. Suppose we have randomly sampled three students from the last year's class and their scores were 70, 80, and 90. What is the sample mean of the three students last year's quiz 2 score?