Answer: 3.84 · 10^5
Step-by-step explanation:
Answer:
The answer to your question is Russia is 50 times greater than Finland.
Step-by-step explanation:
Data
Finland area = 3.4 x 10⁵ km²
Russia area = 1.7 x 10⁷ km²
Proportion = ?
Process
1.- Just divide the Russia's area by the Finland's area.
Proportion = 
Proportion = 
Porportion = 50
Step-by-step explanation:
a. The point estimate is the mean, 47 days.
b. The margin of error is the critical value times the standard error.
At 31 degrees of freedom and 98% confidence, t = 2.453.
The margin of error is therefore:
MoE = 2.453 × 10.2 / √32
MoE = 4.42
c. The confidence interval is:
CI = 47 ± 4.42
CI = (42.58, 51.42)
d. We can conclude with 98% confidence that the true mean is between 42.58 days and 51.42 days.
e. We can reduce the margin of error by either increasing the sample size, or using a lower confidence level.
$65.91 should be the account balance at the end of the month
Y = t*e^(-t/2)
y' = t' [e^(-t/2)] + t [e^(-t/2)]' = e^(-t/2) + t[e^(-t/2)][-1/2]=
y' = [e^(-t/2)] [1 - t/2] = (1/2)[e^(-t/2)] [2 - t] = - (1/2) [e^-t/2)] [t -2]
