Answer:
1 time unit
Step-by-step explanation:
There is a 1 in 3 chance that the time until the bulb burns out is zero, and a 2 in 3 chance that the time is the average between 0 and 3 (since it is uniformly distributed). Therefore, the expected value for the time until it burns is:
The expected value of the time until the lightbulb burns out is 1 time unit.
Answer:
<em>s</em> = .25<em>a</em>
Step-by-step explanation:
if <em>s</em> is Salina's age, and we know that she is 1/4 (.25) her aunt's age, then ONE QUARTER (.25) times AUNT'S AGE (<em>a</em>) = SALINA'S AGE (<em>s</em>)
,4 and 19
........................
The answer in the simplest form as a mixed number is 6 1/3
ANSWER
EXPLANATION
The given expression is;
We factor to obtain;
Multiply by the reciprocal of the second fraction
Cancel out common factors to get,
