Of the 32 students in a class, 18 play the violin, 16 play the piano, and 7 play neither. a. Represent this in a Venn Diagram and determine how many play both the violin and
piano.

B. find the probability that the student
I. plays the violin but not the piano

ii. does not play the violin

iii. plays the piano but not the violin

(a)9

(b)I. 0.28125

II. 0.46875

III. 0.25

Step-by-step explanation:

There are a total of 32 students, therefore the number of elements in the Universal set, n(U)=32

(a)The Venn diagram is attached below.

Therefore, 9 students play both the violin and  piano.

(b)

I. Probability that the student  plays the violin but not the piano

Number of Students who play violin only =18-x=18-9=9

ii.Probability that the student does not play the violin

Number of Students who does not play violin only =17-x+7=17-9+7=15

P(does not play violin only)

iii.Probability that the student plays the piano but not the violin

Number of Students who play piano only =17-x=17-9=8

the circle graph is not a function.

step-by-step explanation:

the graph of the circle is not a function.

because for a graph to be a function, each value of x must give one value of y

in the circle, the values of x for -2< x< 2 each give 2 values of y.

hence this is not a function.

b) 36

step-by-step explanation:

18 times 2 is 36