Question

Unit Test

Answer 1

Answer:

• You need to estimate: approximately 0.84

Explanation:

Please, find attached a figure with the complete question, including the probability distribution.

Solution

The graph does not permit to read exact values, thus you must estimate.

• P(X=6) ≈ 0.03

• P(X=7) ≈ 0.13

• P(X=8) ≈ 0.62

• P(X=9) ≈ 0.14

• P(X=10) ≈ 0.08

P(X ≥ 8) = P(X=8) + P(X=9) + P(X=10)

• P(X≥8) ≈ 0.62 + 0.14 + 0.08 = 0.84