Question 1 Parent Involvement: In the following probability distribution, the ra

Question

Question 1 Parent Involvement: In the following probability distribution, the random variable X represents the number of activities a parent of a 6h -to 8th-grade student is involved in. 0 0.073 4 0.230 P(X) 0.258 0.322 What is the probability that a randomly selected student has a parent involved in three activities? (2 pts) a) b) What is the probability that a randomly selected student has a parent involved in three or four activities? (2 pts) c) What is the probability that a randomly selected student has a parent involved in fewer than two activities? (2 pts)

Explanation / Answer

solution:-

a.  the probability that a randomly selected student has a parent involved in 3 activities

= 32% or .322

b.   the probability that a randomly selected student has a parent involved in 3 or 4 activities

= 0.322 + 0.230

= 0.552

c.  the probability that a randomly selected student has a parent involved fewer than two activites

= 0.073 + 0.117

= 0.19

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