How does the video compute the total time to complete both reports?

Conditions

• A and B must be arrays of the same length.
• Addition is performed entrywise across matched simulation runs.

Reasoning, step by step

1. Generate the array A of simulated completion times for report A.
2. Generate the array B of simulated completion times for report B.
3. Add the paired samples to obtain one million total completion times using `duration = $A + B$`.

Example

The code line visible is `duration = $A + B$`. The narrator says, "And of course, the total time to complete these two reports is simply their summation. So let's add them up and voila, we now have 1 million random samples."

Common misconceptions

• Assuming the total time is computed by adding the maximums or minimums of the intervals.
• Thinking that the addition is done sequentially rather than elementwise across the arrays.

Watch the explanation

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