The probability that Mary packed the dinner is 0.15625
<h3>Further explanation</h3>
The probability of an event is defined as the possibility of an event occurring against sample space.
Let us tackle the problem.
This problem is about Conditional Probability.
in general, the formula we will use is as follows :
Let:
The probability of John that packs the dinners without salt packet is P(J)
The probability of Mary that packs the dinners without salt packet is P(M)
The probability of Sue that packs the dinners without salt packet is P(S)
Then :
If I find there is not salt in my purchased dinner, then the probability that Mary packed my dinner is :
<h3>Learn more</h3>
<h3>Answer details</h3>
Grade: High School
Subject: Mathematics
Chapter: Probability
Keywords: Probability , Sample , Space , Six , Dice , Die , Workers , Fast Food Restaurant , Salt Packet , Dinner