Questions: 1. If the average of a sample size of 250 measures is $4 million and the standard deviation of the sample is $900000 what are the lower and upper bounds of the 95% confidence interval?
2. What is the probability that zero or less would occur in that population?
3. What is the probability that the return will be greater than $8 million?
4. What is the probability that the population mean would be greater than $8 million?