A financial analyst is analyzing the returns from an indexed mutual fund. She has a dataset containing 52 observations, where each observation is the average-annualized return of the index fund of a single week in the previous year. For example, an observation of 5 means that the index fund had a return of 5 percent (per year) for that week. (Note that the observations were recorded such that a value of 5 means 5 percent. Not to be confused with 0.05.) The sample average return of the dataset was calculated to be 9.75 percent and the sample standard deviation was calculated to be 1.0 percent