2. Davis contracts with Erica to buy a certain horse on her behalf. Erica asks Davis not to reveal her identity. Davis makes a d
1 answer:
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Answer:
11,513
Explanation:
Data provided in the question:
Initial bacteria = 200
Growth rate r(t) =
Now,
Total growth after 3 hours =
or
Total growth after 3 hours =
or
Total growth after 3 hours =
[ ∵ ]
Thus,
Total growth after 3 hours = 400 ×
or
Total growth after 3 hours = 400 ×
or
Total growth after 3 hours ≈ 11313
Hence,
Total bacteria after 3 hours = Initial bacteria + Total growth after 3 hours
= 200 + 11313
= 11,513
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