Question

According to the table below, what is the probability that a student chosen atrandom will be 16 or older?Age131415161718Probability 0.01 0.28 0.30 0.25 0.15 0.01A. 0.46OB. 0.41OC. 0.83D. 0.44SUBMI

Answer 1

The variable is "Age of a student"

The table shows you the values that this variable can take and the point probability of each value.

You have to calculate the probability of a student chosen at random will be 16 or older, you can symbolize this sentence as:

`P(X\ge16)`

This means that the student can be 16 or 17 or 18, you can calculate it as the union of the three events:

`P(X\ge16)=P(16)+P(17)+P(18)=0.25+0.15+0.01=0.41`

The probability of a student choosen at randon being 16 years old or older is 0.41.