According to Holmes, Dean, Illowsky, & Hadley (2017 ), "probability is a measure that is associated with how certain we are of outcomes of a particular experiment or activity." For this 4th week's discussion, I studied and surveyed 30 people to know if they are left-handed or right-
handed as we are explaining probability. 8 males and 22 females participated in my survey, and the result of data is listed below.
LH= left-hand; RH= right-hand
1.
If a person is randomly selected from the survey participants, what probability will the person be left-handed?
I used the equation: A+C / A+B+C+D.
Probability of left-handed: (6+1) / (6+16+1+7) = 7/30 = 0.23
2.
If you randomly choose a female from the people you surveyed, what probability is she left-handed? Left-
Handed
Right Handed Total
Female
6 (A)
16 (B)
22
Male
1 (C)
7 (D)
8
