15. By how much, plus or minus, is it reasonable to expect the actual adjusted closing price of Dell computer stock to vary from your prediction in the preceding question? the previous question is below and the data is as well. Please include the formulas used.

the previous question:

14. Predict the adjusted closing price of Dell computer stock on August 6, 2022 [actually, trading days are M-F, excluding Sa and Su, so the next trading day after Aug 5 would be Monday, August 8 but ignore Sa and Su for this assignment and treat Monday as though it comes after Friday.]