In a Box of 7 Batteries,6 Are Dead

question 103

Multiple Choice

In a box of 7 batteries,6 are dead.You choose two batteries at random from the box.Let the random variable X be the number of good batteries you get.Find the expected value of X.

• A)μ = 0.36
• B)μ = 0.92
• C)μ = 0.14
• D)μ = 1.71
• E)μ = 0.29

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Definitions:

Solidarity

The state of being in harmony or concord, particularly among people with shared interests, expressing mutual assistance amongst the community.

Obstacle

Something that blocks one's way or prevents or hinders progress towards a goal.

Knights Of Labor

One of the first major labor organizations in the United States, founded in 1869, that sought to include all working people, regardless of skill level, gender, or race.