Answer:
The total ammount in the compound interest account is $73325.30
Step-by-step explanation:
The compound interest formula is given by:
A: Amount of money(Balance)
P: Principal(Initial deposit)
r: interest rate(as a decimal value)
n: number of times that interest is compounded per unit t
t: time the money is invested or borrowed for.
In our problem, we have that:
A = total amount
P = $9000
r = 0.12
n = 2(semiannually means twice a year)
t = 18
So:
The total ammount in the compound interest account is $73325.30
Answer:
Step-by-step explanation:
Confidence intervals are constructed to estimate an unknown parameter of the population. This is usually population mean and sometimes, population standard deviation.
Since we are dealing with proportion, then the sample proportion would be used to determine the population proportion
Therefore, the pieces of information that the surveyor requires in order to construct the confidence interval are
a. the exact size of the sample that is surveyed
b. the proportion of people in the sample with the characteristic
d. the level of confidence desired
In order to solve, the sample, p proportion is determined.
p = number if people in the sample with the characteristic/ number of sample
q = 1 - p
Margin of error = z × √pq/n
Confidence interval = p ± margin of error
X= total acres on farm
x * 21%= 168
move decimal 2 places to the left to go from percent to decimal form
x * 0.21= 168
divide both sides by 0.21
x= 800 acres
ANSWER: There are a total of 800 acres on the farm
Hope this helps! :)