In statistics, we always use sample mean and sample variance to estimate the unknown mean and variance. Since the mean is often referred to as the first moment of a distribution and the variance as the second moment, this method is often referred to as the method of moments. Why is it that this method is in general inadequate for estimating the unknown parameters of life distributions when censoring occurs

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it

96 39 cause 135 -96=39 im smart (i used a calculater)