Question:

100% correctness required!!

(a) Let A and B be two events. Suppose that the probability that neither event occurs is 3/8. What is the probability that at least one of the events occurs?

(b) Let C and D be two events. Suppose P(C) = 0.5, P (CD) = 0.2 and P ((CD)^c) = 0.4.

What is P (D?)

An urn contains 3 red balls and 2 blue balls. A ball is drawn. If the ball is red, it is kept out of the urn and a second ball is drawn from the urn. If the ball is blue, then it is put back in the urn and a red ball is added to the urn. Then a second ball is drawn from the urn.

(a) What is the probability that both balls drawn are red?

(b) If the second drawn ball is red, what is the probability that the first drawn ball was blue?

some companies have the tendency establishing their premises close to hospitals thus leading to pollution to the health fraternity; as a nursing student there is need to answer the following questions to establish the danger that might arise; thus answer each of the questions properly

1.how does the shortness of the CO₂molding achieve effectiveness when theShort gassing time is highly applied ?

2.why is it such that the withdraw from CO₂molding Rough patterns is always a difficult task?

3.critique accordingly;Overgasing increases the core strength.

4.elaborate on the additive feature of the dextrin while dealing with sodium

5._____________ increases SiO₂-Na₂O ratio that increases the bond.explain

6.elaborate on the molding process while dealing with theClay is used in the CO₂

7.how is impairment led into as gas is passed longer than required

8.justify/falsify; . CO₂used in CO₂molding is at high pressure.

9.what is the effective use of the Sodium Silicate while biding onto the CO₂moulding.

10.The use of CO₂was to __________ the sand mould.elaborate