Very unlikely because this does not happen because of someone UNLESS you touch the probe to the wrong surface....<span> Dust, corrosion or other impurities on the surface of the conductor. can also caue this to happen but this is rare.</span>
Answer:
the Expected rate of return will be 8.2%
the variance will be 0.001296
Explanation:
We will calculate the Expected Rate of Return which is the sum of the wieghted return based on their probabilities:
return of 0.15 probability 20% = 0.03
return of 0.07 probability 70% = 0.049
return of 0.03 probability 10% = 0.003
expected return = 0.082 = 8.2%
Now to calculate the variance we do:
∑(rk-ERR)^2 x pk
The sum of the difference between the expected rate and the escenario rate, power two, and multiply by their posibility

the variance will be: 0.001296
Answer:
Ruby should go to college.
Explanation:
Ruby is currently 50 years old and earning $50,000 per year.
She would like to retire at 67.
She is thinking of going back to college, to complete a graduate degree.
After completing a graduate degree from the college she would earn $55,000.
The total cost of a graduate degree is $75,000.
Ruby still has 17 years to work and earn.
Her income will increase by $5,000 after college
The increase in income earned after college until retirement
= $5,000
17
= $85,000
Since the increase in income is greater than the cost of going to college, Ruby should go to college.
Answer:
d. declines continually as output increases.
Explanation:
Fixed costs remain constant throughout a period regardless of output level. Average fixed costs are obtained by dividing fixed costs by the total output. Because fixed costs do not change, average fixed costs will be influenced mostly by the production level.
A large output means that fixed costs will be spread in many units. The result is a reduction in average fixed costs. When the output is large, a firm enjoys economies of scale. A small output will result in high fixed average costs. A Fixed amount will be shared among a fewer number of units.