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Screen Shot 2019-10-14 at 2.45.53 AM.png

Consider the following discrete probability distribution:
X
4.5
3.5
-2.5
-1.5
P(X)
70
1 0
1 0
1 0
a) What is P (X = -2.5)?
Your answer should be a numerical value that does not include C.
Number
b) What is the standard deviation of X?
Your answer should be a numerical value that does not include C.
Round your response to at least 3 decimal places.
Number

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