The complete question is as follows:
The admission directory of Big City University has a novel idea. He proposed using the IQ scores of current students as a marketing tool. The university agrees to provide him with enough money to administer IQ tests to 50 students. So the director gives the IQ test to an SRS of 50 of the university’s 5000 freshman. The mean IQ score for the sample is xbar=112. The IQ test he administered is known to have a σ of 15. What is the 95% Confidence Interval about the mean? What can the director say about the mean score of the population of all 5000 freshman?
Answer: The 95% confidence interval about the mean is
.
The director can say that he is 95% confident that the mean IQ score of the 5000 freshmen lies between 107.84 and 116.16.
We follow these steps to arrive at the answer:
Since the population standard deviation of the IQ test is known, we can use the Z scores to find the confidence interval.
The formula for the confidence interval about the mean is:

In the equation above, X bar is known as the point estimate and the second term is known as Margin of Error.
The Critical Value of Z at the 95% confidence level is 1.96.
Substituting the values in the question in the equation above we have,



Answer:
C. Private limited company
Explanation:
Ownership in a private limited company is restricted, unlike in a public limited company. The shareholders of a private limited company are usually family members, close friends, or people with a shared interest.
A private limited company can raise capital by selling additional shares. Because becoming a shareholder in a private limited company is restricted, private companies raise capital by selling shares to existing shareholders or to invited investors.
Answer: c.
Explanation: The unemployment rate may underestimate the true extent of unemployment if there are a large number of people working in the underground economy . While the underground economy also known as the black economy may conjure up images of drug deals and prostitution rings, the term actually has much broader scope. It refers not only to illegal economic activity, but all economic activity that goes unreported to government authorities and consequently, avoids being taxed. one of the primary reasons the underground economy exists is that people are trying to evade taxes. But increased government regulations that can make the cost of doing business higher also create an incentive to avoid reporting certain economic activity to the government. An increase in the number of unemployed increases the number of people who work in the black economy because they have more time. On the other hand, an increase in unemployment implies a decrease in the shadow economy.
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Answer:
Exact flow time = 14.5 hours
Value added percentage of flow time = 0.0020
Explanation:
Exact Flow time is calculated as :
1 + 2+ 2+ 3+ 2+ 2+ 05+ 2 hours + [1.75 minutes / 60] hours = 14.50 hours
14.50 * 60 = 871.75 minutes
Value added percentage of flow time calculations :
1.75 minutes / 871.75 minutes = 0.0020 or 0.2%