Lab: Decision Analysis
Ravix Financial Partnerns estimates (subjectively) that the probability its spam filter is properly configured is 0.8. When the spam filter is properly configured, there is a 90% chance that a spam message is being filtered out. If the spam filter configuration is out of date and needs to be configured, the probability of a spam message getting filtered out drops to 20%. Janelle randomly inspects a message in her junk folder (folder where spam messages get filtered to) and finds that it is spam. What is the proability that the spam filter is up-to-date and configured properly is?