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Answers for “在这个蒙特卡洛示例中,`plt.hist` 中的 `density=True` 有什么作用?”

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Setting `density=True` in `plt.hist` normalizes the bar heights so that the plotted histogram represents an empirical probability density estimate of the simulated total durations, rather than raw counts.

Conditions: Used when the goal is to compare the sample distribution with probability-density scale.; The plotted bars are normalized by bin width and sample size.

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The two report completion-time arrays are generated using the `np.random.uniform` function. Report A is modeled by drawing `sims` independent values from a uniform distribution on the interval from 1 to 5 hours, and Report B is modeled by drawing `sims` independent values from a uniform distribution on the interval from 2 to 6 hours.

Conditions: Use the uniform model introduced earlier.; `sims` must already be defined.

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The video computes the total time to complete both reports by performing an elementwise addition of the two simulated completion-time arrays. The total time is simply their summation, represented in code as `duration = A+BA + B`.

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

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The video defines the uniform distribution as a probability distribution that assumes the relative likelihood of all outcomes between a defined minimum and a defined maximum are the same.

Conditions: There must be a defined minimum and maximum.; All outcomes between those bounds are treated as equally likely.