A financial analyst wanted to determine the mean annual return on mutual funds. A random sample of 60 returns shows a mean of 12%. If the population standard deviation is assumed to be 4%, estimate with 95% confidence the mean annual return on all mutual funds.
A) 11.325% to 13.012%
B) 10.988% to 14.025%
C) 11.325% to 14.025%
D) 10.988% to 13.012%
E) 8% to 16%

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The Answer of A financial analyst wanted to determine the mean annual return on mutual funds. A random sample of 60 returns shows a mean of 12%. If the population standard deviation is assumed to be 4%, estimate with 95% confidence the mean annual return on all mutual funds.
A) 11.325% to 13.012%
B) 10.988% to 14.025%
C) 11.325% to 14.025%
D) 10.988% to 13.012%
E) 8% to 16%

A Financial Analyst Wanted to Determine the Mean Annual Return