Answer:
5yrs or 1825 days
Step-by-step explanation:
Given the total amount of the investment after n-days at 9% is $2,320 and the principal amount invested is $1,600
-Let P be the principal amount, A be the total amount of the investment.
-We calculate the number of days using simple interest formula.
#Calculate the total interest earned on the investment:
Simple interest is calculated using the formula:
Hence, it takes 1,825 days to achieve your investment goals
Answer:
The 95% confidence interval for the population proportion is (0.778, 0.884).
Step-by-step explanation:
We have to calculate a 95% confidence interval for the proportion.
The sample proportion is p=0.831.
The standard error of the proportion is:
The critical z-value for a 95% confidence interval is z=1.96.
The margin of error (MOE) can be calculated as:
Then, the lower and upper bounds of the confidence interval are:
The 95% confidence interval for the population proportion is (0.778, 0.884).