Page 4 - Midterm Exam Questions

26.04.2020 M dterm Make-up

7. Toss f ve fa r co ns and let x equal the number of heads observed.
a. Ident fy the sample po nts assoc ated w th th s exper ment, and ass gn a value of x to each sample po nt. Then l st all the poss ble values of x.
b. Calculate p(x) for the values x = 1 and x = 4 .
c. Construct a probab l ty h stogram for p(x).
d. What s P(x = 2 or x = 5 )?

a. What are the poss ble values of x?

A. x = 0,1,2,3,4,5
B. x = 0,1,2,3,4
C. x = 1,2,3,4
D. x = 1,2,3,4,5

b. Calculate p(x) for x = 1 .

p( )1 = (S mpl fy your answer.)

Calculate p(x) for x = 4 .

p( )4 = (S mpl fy your answer.)

c. Choose the correct graph below.

A. B. C.
p(x) p(x) p(x)
0.4 0.4 0.4

0 0 0
0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5
x x x

)
d. P(x = 2 or x = 5 = (S mpl fy your answer.)

https://xl temprod.pearsoncmg.com/ap /v1/pr nt/math 4/14