could you answer Q 3

After analyzing the average stock returns of the 500 companies in the S\&P 500, you identify that the average returns are 7.05% and that the variance of returns is 0.0025. The population variance of the S\&P500 is known and returns are normally distributed. With what confidence level can you ascertain that returns will not be less than 6%. 90% confidence 95% confidence 99% confidence We do not have enough information