Question

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Topic: Algebra II
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Answer 1

Refer to the Probability Distribution Graph.

Question: Which Probabilities are equal to 0.2?

Possible Answers:

P\[(1 \le X \le 3)\] (NO)

Would we use the formula for Area of Triangle to calculate this one?

A = ½ bh
A = ½ (3)(0.3?)
A= ½ (0.9)
A=0.45

P\[(X \ge 4) \] (SELECTION)

A = ½ bh
A = ½ (1)(0.4)
A= 0.2

P\[(X \le 2)\] (SELECTION)

A= ½ bh
A= ½ (2)(0.2)
A=0.2

P\[(2 \le X \le 4)\]

I’m a little unsure on how to go about solving this one. It’s not really acceptable to use the formula for finding the area of a triangle, but a trapezoid formula wouldn’t work either, right?

I apologize, but I’m a newbie in the universe of Algebra II.