Question

Carol is sitting on the bus on the way home from school and is thinking about the fact that she has three homework assignments to do tonight. The table below shows her estimated probability of completing 0,1,2,3 of the

assignments

Answer 1

Complete Question

The complete question is shown on the first uploaded image

Answer:

a

`P(x = 1) = (2)/(9)`

b

`P(x> 1) = (11)/(18)`

c

`P(x \ge 1) = (15)/(8)`

Explanation:

Let x represent the number of assignments

From the table we are told that

The probability doing exactly one assignment is
`P(x = 1) = (2)/(9)`

The probability of doing more than one assignment is mathematically represented as

`P (x>1 ) = P(2) + P(3)`

Substituting values

`P(x> 1) = (5)/(18) + (1)/(3) = (11)/(18)`

The probability of doing at least one assignment is mathematically represented as

`P(x \ge 1) = P(x = 1) + P(x= 2) + P(x=3)`

Substituting values

`P(x \ge 1) = (2)/(9) + (5)/(18) + (1)/(3)`

`P(x \ge 1) = (15)/(8)`