sammileigh8151
contestada

Find the indicated probability.

The table below describes the exercise habits of a group of young adults.

If two different people are randomly selected from the 948 subjects, find the probability that they are both moderate exercisers. Round to six decimal places.

Find the indicated probability The table below describes the exercise habits of a group of young adults If two different people are randomly selected from the 9 class=

Respuesta :

absor201

Answer:

0.007218

Step-by-step explanation:

Total number of moderate exercisers = 81  

We want to find the probability that they are both moderate exercisers

Probability of first person selected is a moderate exercisers = 81/948  

After the selection of the first person who must be moderate exercisers,

Now selecting a different person

Thus, discarding the first person, now 947 subjects are left and 80 moderate exercisers are left.  

So, Probability of second person selected is a moderate exercisers = 80/947  

∴ Probability of 2 different people selected are moderate exercisers = 81/948 × 80/947  

= 540/74813  

= 0.007218!

Otras preguntas