. Andy talks about the differences in how black and white students are treated at the mall -
What are they and do YOU think that this is true?

a) 3.906 × 10⁻¹⁹

b) 200 days

c) 2.56 × 10¹⁸ days

Step-by-step explanation:

Probability that a computer fails in a day = 0.005.

This probability is very similar to the number of computers that'll fail in a day, that is, number of computer failures per day = 0.005

a) Probability that all the 8 computers fail in a day.

This probability is setup as a binomial distribution problem, but ⁸C₈ = 1 and q⁰ = 1

So, P(X=8) = (0.005)⁸ = 3.906 × 10¹⁹

b) The mean number of days until a specific computer fails

Number of failure = 0.005 per day

Mean number of days = E(X) = 1/0.005 = 200 days

c) Mean number of days until all the 8 computers fail

E(X) = 1/(3.906 × 10⁻¹⁹)

E(X) = 2.56 × 10¹⁸ days