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:
HI SOORY
Explanation:
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Answer:
<em>In theory, both are riskless but in practicality they aren't completely risk free.</em>
Explanation:
<em>In investment theory</em>, the investment in government bonds is <em>riskless </em>, irrespective of the investment maturity period because they are backed by the government.
However, <em>in practicality</em> every investment involves risk whether it's a short term or long term. However, a short term investment like the one specified in <em>statement 2</em> involves lower time frame and thereby lower volatility, hence it implies <em>lower risk</em>. The investment specified in <em>statement 1</em> is of longer term and hence can involve higher volatility, hence it implies <em>higher risk.</em>
<em><u>Note</u></em><em>- All the governments are prone to risk practically</em> because they are also part of the global financial and economic system and hence, they have to manage their budget balances prudently. Every investment thereby involves <em>risk</em>, it's just the <em>financial backing</em> of the <em>government financial</em> <em>instruments</em> which makes them less risky as compared to the other financial instruments.
Answer:
E. The annual effective interest rate earned by the U.S. Treasury Bill is greater than rate for the U.S. Treasury Bill.
Explanation:
<em>Treasury bills, or T-bills, are short term investments that are issued by the government. Unlike normal bonds which governments issued with interest payment, they do not have interest payments, but instead are sold at a discount.</em> The Understanding how to calculate a T-bills yield and discount yield based on the maturity date is important to evaluate the investment.
I am not entirely sure what a performance test is, but I can help with the others. A polygraph is a machine, used usually if you are in legal trouble, to see if you are lying. While results aren't 100% accurate, you typically can get a gage for if someone committed a crime. They are also rarely used for interviews, some companies want to see if people are lying on their resumes. Drug tests are tests that are given to most people with a job, and especially sports players. Companies especially like to test people for drugs, to see if they might be on an illegal drug that could cause them to work less efficiently. It also is a liability issue for the company if an employee is on an illegal drug. Drug tests are typically done at a lab, and you usually have to pee in a cup and have it get tested.
