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1 of 8 0-day streak

Read normal parameters and describe their graph effect

Question 1 of 8

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Let X be the duration, in minutes, of a repeated task

The probability density function of \(X\) is

\[f(x)=\frac{1}{4\sqrt{2\pi}}\exp\left(-\frac{1}{2}\left(\frac{x-14}{4}\right)^2\right)\]

Identify the two defining parameters in the displayed density

(a)1 mark

Which equation correctly relates a normal parameter to the displayed density?

(b)1 mark

Find the mean of \(X\)

(c)1 mark

Find the standard deviation of \(X\)