The first few weeks of 2004 were good for stock market. A sample of 25 large open-end funds showed following year-to-date returns through January 16, 2004 (Barron's, January 19, 2004).
7.0 3.2 1.4 5.4 8.5 2.5 2.5 1.9 5.4 1.6 1.0 2.1 8.5 4.3 6.2 1.5 1.2 2.7 3.8 2.0 1.2 2.6 4.0 2.6 0.6
3 digits to the right of the decimal
Q. Determine the point estimate of population mean year-to-date return for the large open-end funds?
Q. Given that population has normal distribution, make a 95% confidence interval for population mean year-to-date return for open-end funds. Lower value:
Q. Upper value: