Use the data set "mfunds.csv" (MATH561) for this problem. Each column contains asset returns on the asset defined by the column label."eqmrkt" stands for an equal weighted market index, and "valmrkt" stands for a value weighted market index."tbill" is the return on a 30-day U.S. t-bill and is often used as a proxy for the "risk free" rate of return.We will consider the "drefus" and "fidel" funds.

A fund manager claims that the "drefus" fund has a monthly average rate of return of 1.3%. Test the null hypothesis at the 5% level that the mean return on the "drefus"fund is 1.3%. State clearly whether you reject the claim or not. State in words what the rejection or failure to reject means.