Construct a 95% confidence interval for population mean.
The mean return for a random sample of 33 mutual funds is 14.93 percent with a standard deviation of 9.57. Make a 95 percent confidence interval for the population mean.
1.11.53 to 18.32
2.11.01 to 18.85
3.14.82 to 15.04
4.10.95 to 18.91