Question 1164019
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The answer to part A is 0.5
The answer to part B is 0.4


To get these answers, we add up the P(x) values. However, we only add up specific ones based on the restrictions mentioned.


Part A says "between 2 and four (inclusive)", which I interpret to mean {{{2 < x <= 4}}}. So x can't equal 2, but it can equal 4. This is the same as saying {{{3 <= x <= 4}}} only when x is an integer. We'll be adding the P(x) values when x = 3 and x = 4, so we get 0.2+0.3 = 0.5


Part B says "between 2 (inclusive) and four", so we have {{{2 <= x < 4}}} now which is the same as {{{2 <= x <= 3}}} only when x is an integer. We'll be adding the P(x) values when x = 2 and x = 3 to get 0.2+0.2 = 0.4 
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