Answer:
- P(≥1 working) = 0.9936
- She raises her odds of completing the exam without failure by a factor of 13.5, from 11.5 : 1 to 155.25 : 1.
Step-by-step explanation:
1. Assuming the failure is in the calculator, not the operator, and the failures are independent, the probability of finishing with at least one working calculator is the complement of the probability that both will fail. That is ...
... P(≥1 working) = 1 - P(both fail) = 1 - P(fail)² = 1 - (1 - 0.92)² = 0.9936
2. The odds in favor of finishing an exam starting with only one calculator are 0.92 : 0.08 = 11.5 : 1.
If two calculators are brought to the exam, the odds in favor of at least one working calculator are 0.9936 : 0.0064 = 155.25 : 1.
This odds ratio is 155.25/11.5 = 13.5 times as good as the odds with only one calculator.
_____
My assessment is that there is significant gain from bringing a backup. (Personally, I might investigate why the probability of failure is so high. I have not had such bad luck with calculators, which makes me wonder if operator error is involved.)
Answer:
Step-by-step explanation:
<h2>This account can be modeled using the compound interest formula.</h2><h2>the compound interest formula is expressed as</h2>
Where
A =final amount = y
P=initial principal balance
= $300
r=interest rate = 16%= 0.16
t=number of time periods elapsed= x
Hence the equation to model his account balance/ final amount A (y) after time (x) years is
Answer:
I believe that Tony will have to work 16 or 17 hours to have enough money to buy the TV
Step-by-step explanation:
$276.99 - 135 = $141.99
$8.50 x 8 = $68
$8.50 x 16 = $136
$8.50 x 17 = $144.50
$8.50 x 33 = $280.50
$136 < $141.99 $144.50 > $141.99
$8.50 x 16 or $8.50 x 17
Check to see if the numbers are correct.
If they are you will have to make a choice.
I hope this helped. ☺
The only way I could ever do that is 3
Answer:
6
Step-by-step explanation:
formula is y2-y1 / x2-x1