Using monthly data available on Yahoo! Finance, calculate thehistorical betas of Apple Inc. and The Kellogg Company for the5-year period ending January 1, 2021. [Note: as a shortcut, you mayassume one month U.S. T-bills yielded 0% throughout the period from1/1/16 to 1/1/21. Using actual T-Bill returns to calculate themonthly excess returns of these securities and the S&P 500Index should not materially alter the results of thesecalculations.]