In a sample of 60 mutual taken, the mean return in the sample was 13% with a standard deviation of 6.9%. the return on a particular index of stocks (against which the mutual funds are benchmarked) is 11.25%. When testing the hypothesis (at at 5% level of significance) that the average return on actively manage mutual funds is higher than the return on an index of stocks, what is the p-value,

No one has been able to help me with problem. Please give step by step instruction and especially find number on the z charts. The teacher said the answer is 0.0466