The Basic Practice of Statistics
8th Edition
ISBN: 9781319042578
Author: David S. Moore, William I. Notz, Michael A. Fligner
Publisher: W. H. Freeman
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Chapter 20, Problem 20.40E
a.
To determine
To explain: Matched pairs design.
b.
To determine
To find: The sample
To describe: The conclusion about the confidence interval.
c.
To determine
To explain: The reasons for the rough approximations of t procedures for the given data.
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T1.4: Let ẞ(G) be the minimum size of a vertex cover, a(G) be the maximum size of an
independent set and m(G) = |E(G)|.
(i) Prove that if G is triangle free (no induced K3) then m(G) ≤ a(G)B(G). Hints - The
neighborhood of a vertex in a triangle free graph must be independent; all edges have at least
one end in a vertex cover.
(ii) Show that all graphs of order n ≥ 3 and size m> [n2/4] contain a triangle. Hints - you
may need to use either elementary calculus or the arithmetic-geometric mean inequality.
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…
Negate the following compound statement using De Morgans's laws.
Chapter 20 Solutions
The Basic Practice of Statistics
Ch. 20.1 - Prob. 1AYKCh. 20.1 - Prob. 2AYKCh. 20.2 - Prob. 3AYKCh. 20.2 - Prob. 4AYKCh. 20.3 - Prob. 5AYKCh. 20.3 - Prob. 6AYKCh. 20.3 - Prob. 7AYKCh. 20.4 - Prob. 8AYKCh. 20.4 - Prob. 9AYKCh. 20.4 - Prob. 10AYK
Ch. 20.6 - Prob. 11AYKCh. 20.6 - Prob. 12AYKCh. 20.7 - Prob. 13AYKCh. 20.7 - Prob. 14AYKCh. 20 - Prob. 20.15CYSCh. 20 - Prob. 20.16CYSCh. 20 - Prob. 20.17CYSCh. 20 - Prob. 20.18CYSCh. 20 - Prob. 20.19CYSCh. 20 - Prob. 20.20CYSCh. 20 - Prob. 20.21CYSCh. 20 - Prob. 20.22CYSCh. 20 - Prob. 20.23CYSCh. 20 - Prob. 20.24CYSCh. 20 - Prob. 20.25ECh. 20 - Prob. 20.26ECh. 20 - Prob. 20.27ECh. 20 - Prob. 20.28ECh. 20 - Prob. 20.29ECh. 20 - Prob. 20.30ECh. 20 - Prob. 20.31ECh. 20 - Prob. 20.32ECh. 20 - Prob. 20.33ECh. 20 - Prob. 20.34ECh. 20 - Prob. 20.35ECh. 20 - Prob. 20.36ECh. 20 - Prob. 20.37ECh. 20 - Prob. 20.38ECh. 20 - Prob. 20.39ECh. 20 - Prob. 20.40ECh. 20 - Prob. 20.41ECh. 20 - Prob. 20.42ECh. 20 - Prob. 20.43ECh. 20 - Prob. 20.44ECh. 20 - Prob. 20.45ECh. 20 - Prob. 20.46ECh. 20 - Prob. 20.47ECh. 20 - Prob. 20.48ECh. 20 - Prob. 20.49ECh. 20 - Prob. 20.50ECh. 20 - Prob. 20.51ECh. 20 - Prob. 20.52E
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- Negate the following compound statement using De Morgans's laws.arrow_forwardQuestion 6: Negate the following compound statements, using De Morgan's laws. A) If Alberta was under water entirely then there should be no fossil of mammals.arrow_forwardNegate the following compound statement using De Morgans's laws.arrow_forward
- Characterize (with proof) all connected graphs that contain no even cycles in terms oftheir blocks.arrow_forwardLet G be a connected graph that does not have P4 or C3 as an induced subgraph (i.e.,G is P4, C3 free). Prove that G is a complete bipartite grapharrow_forwardProve sufficiency of the condition for a graph to be bipartite that is, prove that if G hasno odd cycles then G is bipartite as follows:Assume that the statement is false and that G is an edge minimal counterexample. That is, Gsatisfies the conditions and is not bipartite but G − e is bipartite for any edge e. (Note thatthis is essentially induction, just using different terminology.) What does minimality say aboutconnectivity of G? Can G − e be disconnected? Explain why if there is an edge between twovertices in the same part of a bipartition of G − e then there is an odd cyclearrow_forward
- Let G be a connected graph that does not have P4 or C4 as an induced subgraph (i.e.,G is P4, C4 free). Prove that G has a vertex adjacent to all othersarrow_forwardWe consider a one-period market with the following properties: the current stock priceis S0 = 4. At time T = 1 year, the stock has either moved up to S1 = 8 (with probability0.7) or down towards S1 = 2 (with probability 0.3). We consider a call option on thisstock with maturity T = 1 and strike price K = 5. The interest rate on the money marketis 25% yearly.(a) Find the replicating portfolio (φ, ψ) corresponding to this call option.(b) Find the risk-neutral (no-arbitrage) price of this call option.(c) We now consider a put option with maturity T = 1 and strike price K = 3 onthe same market. Find the risk-neutral price of this put option. Reminder: A putoption gives you the right to sell the stock for the strike price K.1(d) An investor with initial capital X0 = 0 wants to invest on this market. He buysα shares of the stock (or sells them if α is negative) and buys β call options (orsells them is β is negative). He invests the cash balance on the money market (orborrows if the amount is…arrow_forwardDetermine if the two statements are equivalent using a truth tablearrow_forward
- Question 4: Determine if pair of statements A and B are equivalent or not, using truth table. A. (~qp)^~q в. р л~9arrow_forwardDetermine if the two statements are equalivalent using a truth tablearrow_forwardQuestion 3: p and q represent the following simple statements. p: Calgary is the capital of Alberta. A) Determine the value of each simple statement p and q. B) Then, without truth table, determine the va q: Alberta is a province of Canada. for each following compound statement below. pvq р^~q ~рл~q ~q→ p ~P~q Pq b~ (d~ ← b~) d~ (b~ v d) 0 4arrow_forward
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