Question $2$: Create a new variable "daily return" and plot the time series of daily

returns. The plot should have $($a$)$ a plot label, $($b$)$ a time series label, $($c$)$ axes labels, $($d$)$ a

plot legend, and $($e$)$ a grid.

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Question $3$: Provide descriptive statistics of daily returns.

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Question $4$: Create the $90\%$ confidence interval of daily returns.

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Question $5$: Create the $90\%$ confidence interval of the mean daily return.

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Question $6$: Plot Empirical and Normal PDF and Empirical and Normal CDF of daily

returns.

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Question $7$: Conduct Kolmogorov$-$Smirnov Non$-$Parametric Test