NiCD Battery In an NiCd battery, a fully charged cell is composed of Nickelic Hy

Question

NiCD Battery In an NiCd battery, a fully charged cell is composed of Nickelic Hydroxide. Nickel is an element that has multiple oxidation states and that is usually found in the following states: Nickel Charge Proportions Found 0 0.17 +2 0.35 +3 0.33 +4 0.15 For both of these items, formulate the events as sets as you present your answer. (a) What is the probability that a cell has at least one of the positive nickel-charged options? (b) What is the probability that a cell is not composed of a positive nickel charge greater than +3?

Explanation / Answer

a) probability that a cell has at least one of the positive nickel charged options = 1 - probability that that a cell has no positive nickel charged options

= 1 - 0.17 = 0.83

Therefore 0.83 is the required probability here. The possible sets here are +2,+3 and +4

b) probability that a cell is not composed of a positive nickel charge greater than +3 = 1 - probability that a cell is composed of a positive nickel charge greater than +3

= 1 - 0.15 = 0.85

Therefore 0.85 is the required probability here.The possible sets here are 0,+2 and +3

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