In: Statistics and Probability
A two-way table is given below, which shows the counts of the favorite leisure activities for 50 college students - 20 men and 30 women. Leisure Activity Yoga Sports TV Total Men 2 10 8 20 Women 16 6 8 30 Total 18 16 16 50 (a) What is the probability that a student selected at random is both a woman and student prefers Yoga? (b) What is the probability that a student is either a male or prefers sports? (c) What is the probability that a student selected at random prefers to watch television? (d) What is the probability that a female student selected at random, prefers television? (e) Draw the tree diagram for the above table. Be sure to label all probabilities.
activity | yoga | sports | tv | total |
men | 2 | 10 | 8 | 20 |
woman | 16 | 6 | 8 | 30 |
a)Probability(woman and prefers yoga)=16/50=0.32
b)total men=20
total no. of students playing sports=16
no. of men playing sports=10
probability(either male or plays sports)= P(A)+P(B)-P(A and B)= 20/50+16/50-10/50= 0.52
c)total no. of students watching tv= 8+8=16
probability(students watching tv)= 16/50=0.32
d)Probability(female student watches tv)=8/30=0.27
e)each probability of the event occuring is in front of the arrow of the event
0.1
0.4 0.5
0.4
0.53
0.60.2
0.27