What proportin of steel plates have elongations greater

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Reference no: EM13320222

Elongation (in %) of steel plates treated with aluminium are random with probability density function

f(x)={x/250 20<x<30 and 0 otherwise

a)What proportin of steel plates have elongations greater than 25 %?

b)Find the mean elongation.

c)Find the variance of the elongations.

d)Find the standard deviation of the elongations.

e)Find the cumulative distribution function of the elongations.

f)A particular plate elongates 28%. What proportion of plates elongate more than this?

Reference no: EM13320222

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