Evaluate ( b - a )^ - 3
c , when a = 4,b = 5 , and c = 2

An assembly consists of two mechanical components. suppose that the probabilities that the first and second components meet specifications are 0.87 and 0.84. assume that the components are independent. determine the probability mass function of the number of components in the assembly that meet specifications. x

I'm confused on this could anyone me and show me what i need to do to solve it.

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.