Answer:
1 / 16
Step-by-step explanation:
Number of options = 4
Number of correct answers = 1
Number points gained for a correct answer = 1
Number of points lost for an incorrect answer = 1/4 = 0.25
Probability of choosing a correct option = 1/4
Probability of choosing an incorrect option = 3/4
x ____ 1 ______ - 1/4
P(x) __ 1/4 ______ 3/4
Expected gain or loss :
E(x) = Σx*p(x)
E(x) = (1 * 1/4) + (-1/4 * 3/4)
E(x) = 1/4 - 3/16
E(x) = (4 - 3) / 16
E(x) = 1 /16
A gain of 1/16
Answer:
It's B.) 1518
using fraction calculator**
As a positive improper fraction (numerator > denominator):
18/15 = 6/5
As a mixed number
(a whole number and a proper fraction, of the same sign):
18/15 = 1 1/5
As a decimal number:
18/15 = 1.2
As a percentage:
18/15 = 120%
Step-by-step explanation:
