A seed packaging company purchases 40% of their beans seeds from supplier A and 60% from supplier B and mixes these seeds together. If the bean seed comes from supplier A, the probability it will germinate is 85%. If the bean seed comes from supplier B, the probability it will germinate is 75%.(a) Find the probability P(G) that a seed selected atrandom from the mixed seeds will germinate.
(b) Given that a seed germinates, find the probability that theseed was purchased from supplier A.

A) 0.79

B) 0.43

Explanation:

a. P (G) = Seed germinates either from supplier A or supplier B

P (A chosen) & P (A Seed germinates) or P (B chosen) & P (B seed germinates)

= (0.40 X 0.85) + (0.60 X 0.75) = 0.34 + 0.45

= 0.79

b. P (A/G) = P (G/A) P (A)

                      P (G)

= (0.85 X 0.40) / 0.79 = 0.34 /0.79

= 0.43

c, 1a hope this

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia