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:
explains how a firm's WACC increases with the use of financial leverage.
Explanation:
According to the MM Proposition II with taxes, the cost of equity rises with the increases use of debt in the capital structure of a firm.
= 
× 
As cost of equity increases, the firm's WACC increases also
The MM Proposition I with taxes reveals how utilizing the tax shield on debt causes an increase in the value of a firm
Answer:
$4,842,800.00
Explanation:
Units-of-production depreciation method calculates the amount to be deprecation depending on the asset usage for that period.
In this case, the total hours the asset is expected to work.
Cost of machine $ 40,000,000.00
Salvage value : $ 47,000.00
total hours machine should work: 33,000.00
Depreciable amount: = Cost price- salvage value
=$40,000,000.00-$47,000.00
=$39,953,000.00
Depreciation per hour= $39,953,000.00/33000
=1,210.6969
=1,210.70
Depreciation for 2018 =1210.7x4000
=$4,842,800.00
Answer: a) the type of exposure to Geomyces destructans; whether the bats became sick with WNS
Explanation: The independent variable refers to the variables employed by the experimenter to use as a tool to observe changes in the dependent variable. In an experimental study, the independent variables are usually the different controls adopted for the experiment. In the scenario above, the independent variable is the type of exposure to Geomyces destructans which each of the groups are exposed to. These variation in control in which the different groups are exposed to may result in different response within the group which is the change in WNS. These response due to exposure to different control is called the dependent variable.
Salt is the term used in cryptography that defines a value that can be used to ensure that hashed plaintext will not consistently result in the same digest. The salt is<span> </span>random<span> data that is used </span> to <span> defend passwords against </span>dictionary attacks<span> or against its hashed equivalent.
For each password a new salt is generated randomly.</span>
