Question

**Section 1: True/False, & explain why in two or three
sentences:**

6. You try to explain the number of IBM shares traded in the stock market per day in 2005. As an independent variable you choose the closing price of the share. This is an example of simultaneous causality.

Answer #1

**TRUE**

Now this is an example of simultaneous causality or simultaneous bias as the number of shares traded in a single day depends upon a variety of factors and not only upon the closing factor of the share. Here all the variables that are impacting the number of shares traded in a single day have complex interactions with each other. Here we cannot just use the closing price of the share as the independent variable that is used to estimate the number of trades in a day. If it was that simple then the market would not experience such a high or low as it does and people would not gain or lose money in the stock market so rapidly.

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Section 1: True/False, & explain why in two or three
sentences:
5. You are trying to forecast the quarterly US dollar-Euro
exchange rate as a function of the dollar-Euro exchange rate in the
previous quarter and the quarter before that. This is an
autoregressive model with order 3.

Section 1: True/False, & explain why in two or three
sentences:
3. Assume that you had estimated the following quadratic
regression model:
Test score = 607.3 + 3.85 Income - 0.0423
Income2. If income increased from 10 to 11
($10,000 to $11,000), then the predicted effect on testscores would
be 2.96.

Please state true false or Uncertain. Please explain in 4 or
more sentences on why you choose it:
1) If an economy experiences an improvement in the average level
of it production technologies, then, in the long run, both GDP and
GDP per worker will increase
2)Suppose you always use your credit card for purchases. Your
credit card limit must then be thought of as part of your money
holdings.

Which of the following sentences are statements? If TRUE or
FALSE why!? :) Thank you!
a. 2^2 + 3^2 = 4^2.
b. a^2 + b^2 = c^2.
c. If x = 2, then x^2 = 4.
d. If x^2 = 4, then x = -2.
e. For each real number x, if x^2 = 4, then x = 2.
f. The number 25 has 3 positive divisors.
g. If p is a prime number, then p^2 has three positive
divisors.

True False or uncertain and explain why in 3 sentences or
more.
1)A decrease in the (net of transfers) tax rate on national
income causes the aggregate demand curve to shift to the right.
2)Unless the economy is composed solely of price-making firms,
the short run aggregate supply curve is upward sloping.

For the following questions label each statement as True
or False and explain why you choose your answer.
True or False Economics is a business discipline
that studies how firms can maximize profits.
2. True or False When the price of an item increases it means
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explain why.
Perfectly competitive firms have no control over the price they
charge for their product.
For a natural monopoly, average cost declines as the number of
units produced increases over the relevant output range.
An oligopolist has a larger than average portion of total
market share without having to do any advertising.

1)
Three parts
A) True or false. Briefly explain why.
Given the statement: 1 mole of vapor mixture consisting of A and
B is enclosed in a thermally conductive cylinder by a frictionless
piston. The mixture is ignited to start a chemical reaction between
A and B. This causes the piston to move up and down violently.
After the gas returns to its initial pressure P₀ and temperature
T₀:
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Answer with True or False for these questions and if you
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1, Shannon’s capacity is doubled whenever the signal power is
doubled.
2, the Datalink layer is dealt with at only the source and
destination nodes and not by intermediate nodes.
3, The transport layer is dealt with at every intermediate
node.
4, Stop-and-Wait flow control works best when the frame transfer
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choose correct answer and explain why its true or how you get
it?
1/A discrete probability distribution:
a/
assigns a probability to each possible value of the random
variable.
b/
can assume values between -1 and +1.
c/
is a listing of all possible values of the random variable.
d/is independent of the parameters of the distribution
2/
The probability that event A occurs, given that event
B has occurred, is an example of:
a/
a marginal probability.
b/
more...

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