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Critically analyze the New Keynesian approach to explain business cycles.
“According to New Keynesians small nominal rigidities have large macroeconomic effects”. Discuss the above statement.
Random sample of size N = 2 are drawn from a finite population consisting of
the numbers 1, 3, 8, 9.
Find the following:
Mean, Variance and Standard deviation of the Population.
Mean, Variance and Standard deviation of the Sample means.
3. Marginal utilities of goods A and B are 600 and 900, and the price of good B is Rs.120. If the consumer is in equilibrium, the price of good A is
Let 1 and 1 denote two distinct objects, neither of which is in R.
Define an addition and scalar multiplication on R [ f1g [ f1g as you
could guess from the notation. Specifically, the sum and product of two
real numbers is as usual, and for t 2 R define
t1 D
8
ˆ<
ˆ:
1 if t < 0;
0 if t D 0;
1 if t > 0;
t .1/ D
8
ˆ<
ˆ:
1 if t < 0;
0 if t D 0;
1 if t > 0;
t C1D1C t D 1; t C .1/ D .1/ C t D 1;
1C1D1; .1/ C .1/ D 1; 1 C .1/ D 0:
Is R [ f1g [ f1g a vector space over R? Explain.
Draw all the possible samples of 2 without replacement from a population consisting of 4, 9, 12, 15, 20. Contruct the sampling distribution of sample mean and verify
23. Find the sensible heat factor of an air-conditioning unit having a sensible heat load of 60 kw and latent heat
load of 20 kw.
A. 70% B. 80% C. 75% D. 85%
22. A coil has an inlet temperature of 50 oF and outlet of 85 oF. If the mean temperature of coil is 100 oF, find
the bypass factor of the coil. (SHOW THE SOLUTION)
A. 0.4 B. 2 C. 1.667 D. 0.3
21. Bypass factor of coil is 0.8 for one row. What is the bypass factor if there are 8 coils in a row? (SHOW THE SOLUTION NOT EXPLAINATION)
A. 0.029 B. 0.70 C. 0.80 D. 0.49
20. An air conditioned theater is to be maintained at 80 oF dry bulb temperature and 50% RH(h = 31.35 Btu/lb). The calculated total sensible heat load in the theater is 500,000 Btu/hr, and the latent heat load is 150,000 Btu/hr. The air mixture at 84 oF db and 72 oF wb temperature(h = 35.82 Btu/lb) is cooled to 63 oF dry bulb and 59 oF wet bulb temperature (h = 25.78 Btu/lb)by chilled water cooling coils and delivered as supply air to the theater. Calculate the tons of refrigeration required.
A. 83 B.130 C.127 D.122
