2.4 Probability Distributions

The lifespan, $T\,$ hours, of a certain component is normally distributed. Given that $P (T < 800) = 0.3$ and $P (T > 1200) = 0.15$ .

Find the mean and standard deviation of the lifespan of the component.

[6]

The lifespan, $T\,$ hours, of a certain component is normally distributed. Given that $P (T < 800) = 0.3$ and $P (T > 1200) = 0.15$ .

Find the mean and standard deviation of the lifespan of the component.

[6]

2.4 Probability Distributions Questions