I need quick help with this!! 15 PTS POSSIBLE!!! i know for sure its not 3/50, but i think its 3/20? and explain your reasoning.

I need quick help with this 15 PTS POSSIBLE i know for sure its not 350 but i think its 320 and explain your reasoning class=

Respuesta :

Answer:

3/20

Step-by-step explanation:

Given:

Probability that it is Monday and that a student is absent is 3/100

Probability that a randomly selected day of the school week is monday is 1/5

To Find:

What is the probability that a student is absent given that today is Monday.

Solve:

It may be different if it were on a Wednesday. Because we expect fewer absentees on Wednesday than on Monday/ Friday. In these cases the conditional probability, P(absent/weekday) would differ depending on the day of the week.

3/100 ÷ 1/5 = 3/20

The probability that a student is absent on a Monday is 3/20

[RevyBreeze]