Problems 87 and 88 refer to the data in the following table, obtained in a study to determine the frequency and dependency of IQ ranges relative to males and females. 1 , 000 people were chosen at random and the following results were recorded: (A) What is the probability of a person having an IQ above 120 , given that the person is a female? A male? (B) What is the probability of a person being female and having an IQ above 120 ? (C) Are events C and F dependent? C and F ′ ?
Problems 87 and 88 refer to the data in the following table, obtained in a study to determine the frequency and dependency of IQ ranges relative to males and females. 1 , 000 people were chosen at random and the following results were recorded: (A) What is the probability of a person having an IQ above 120 , given that the person is a female? A male? (B) What is the probability of a person being female and having an IQ above 120 ? (C) Are events C and F dependent? C and F ′ ?
Solution Summary: The author calculates the probability of a person having an IQ above 120, given that the person is female.
Problems
87
and
88
refer to the data in the following table, obtained in a study to determine the frequency and dependency of
IQ
ranges relative to males and females.
1
,
000
people were chosen at random and the following results were recorded:
(A) What is the probability of a person having an
IQ
above
120
, given that the person is a female? A male?
(B) What is the probability of a person being female and having an
IQ
above
120
?
18.9. Let denote the boundary of the rectangle whose vertices are
-2-2i, 2-21, 2+i and -2+i in the positive direction. Evaluate each of
the following integrals:
(a).
之一
dz, (b).
dz, (b).
COS 2
coz dz,
dz
(z+1)
(d).
z 2 +2
dz, (e).
(c). (2z+1)zdz,
z+
1
(f). £,
· [e² sin = + (2² + 3)²] dz.
(2+3)2
We consider the one-period model studied in class as an example. Namely, we assumethat the current stock price is S0 = 10. At time T, the stock has either moved up toSt = 12 (with probability p = 0.6) or down towards St = 8 (with probability 1−p = 0.4).We consider a call option on this stock with maturity T and strike price K = 10. Theinterest rate on the money market is zero.As in class, we assume that you, as a customer, are willing to buy the call option on100 shares of stock for $120. The investor, who sold you the option, can adopt one of thefollowing strategies: Strategy 1: (seen in class) Buy 50 shares of stock and borrow $380. Strategy 2: Buy 55 shares of stock and borrow $430. Strategy 3: Buy 60 shares of stock and borrow $480. Strategy 4: Buy 40 shares of stock and borrow $280.(a) For each of strategies 2-4, describe the value of the investor’s portfolio at time 0,and at time T for each possible movement of the stock.(b) For each of strategies 2-4, does the investor have…
eric
pez
Xte
in
z=
Therefore, we have
(x, y, z)=(3.0000,
83.6.1 Exercise
Gauss-Seidel iteration with
Start with (x, y, z) = (0, 0, 0). Use the convergent Jacobi i
Tol=10 to solve the following systems:
1.
5x-y+z = 10
2x-8y-z=11
-x+y+4z=3
iteration (x
Assi 2
Assi 3.
4.
x-5y-z=-8
4x-y- z=13
2x - y-6z=-2
4x y + z = 7
4x-8y + z = -21
-2x+ y +5z = 15
4x + y - z=13
2x - y-6z=-2
x-5y- z=-8
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f
Chapter 8 Solutions
Pearson eText for Finite Mathematics for Business, Economics, Life Sciences, and Social Sciences -- Instant Access (Pearson+)
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