The closest to the minimum number of consumers needed to obtain the estimate with the desired precision is (b) 271
Explanation:
When the prior estimate of population proportion is not given , then the formula to find the sample size is given by :-
where E = Margin of error.
z* = Critical z-value.
As per given , we have
E = 5%=0.05
Confidence level = 90%
The critical value of z at 90% is 1.645 (By z-table)
Put all values in the formula , we get
n=0.25(1.645/0.05)²
n=0.25(32.9)²
n=270.6025≈271
Thus, the minimum sample size needed = 271
Hence , the correct answer is 271 .
Answer:
B. Memory
Explanation:
Mnemonics are a tool to aid memory.
A = $9.99, the amount needed after 1 year
r = 0.018% = 0.00018, interest rate
n = 12, compoundings per year
t = 1, one year duration
Let P = required balance at the beginning of the year.
Then
P(1 + 0.00018/12)¹² = 9.99
1.00018P = 9.99
P = $9.988 ≈ $9.99
Answer: $9.99
Answer:
$600
Explanation:
In this situation, first we have to know that tax levy on assessed value.
<u>Computation of tax rate:</u>
Appraised Value = $25,000
Assessed value = $20,000
Tax = $300
Tax rate = ($300 / $20,000) x 100 = 1.5%
Assume Appraised Value = $45,000
Assume Assessed value = $40,000
Calculation of tax value = Assessed value x tax rate
= $40,000 x 1.5%
= $600
Answer:
Shawna needs to consult with a financial advisor to make sure she has not missed any details.
