Please help to explain how to explain the below. How do I test variance? I'm going to use excel.

-State the hypothesis if you want to test the difference in mean between the two samples.

-Summarize the data for the two funds.

-Before you test the means, test the variance to determine which two-sample test you need to calculate. Is there a difference in variance? Follow the steps.

-Is there a statistical difference between mean return? (Follow the steps).

1. What is the critical value assuming 0.05 significance level?

2. What is the t-statistic?

3. Is there an economic difference?

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