MyLab Statistics with Pearson eText -- Standalone Access Card -- for Fundamentals of Statistics
MyLab Statistics with Pearson eText -- Standalone Access Card -- for Fundamentals of Statistics
5th Edition
ISBN: 9780134743295
Author: Michael III Sullivan
Publisher: PEARSON
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Chapter B.2, Problem 10AYU

A simple random sample of size n is drawn from a population that is known to be normally distributed. The sample variance, s2, is determined to be 19.8.

  1. (a) Construct a 95% confidence interval for σ2 if the sample size, n, is 10.
  2. (b) Construct a 95% confidence interval for σ2 if the sample size, n, is 25. How does increasing the sample size affect the width of the interval?
  3. (c) Construct a 99% confidence interval for σ2 if the sample size, n, is 10. Compare the results with those obtained in part (a). How does increasing the level of confidence affect the width of the confidence interval?
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Please solving problem2 Problem1 We consider a two-period binomial model with the following properties: each period lastsone (1) year and the current stock price is S0 = 4. On each period, the stock price doubleswhen it moves up and is reduced by half when it moves down. The annual interest rateon the money market is 25%. (This model is the same as in Prob. 1 of HW#2).We consider four options on this market:ˆ A European call option with maturity T = 2 years and strike price K = 5;ˆ A European put option with maturity T = 2 years and strike price K = 5;ˆ An American call option with maturity T = 2 years and strike price K = 5;ˆ An American put option with maturity T = 2 years and strike price K = 5.(a) Find the price at time 0 of both European options.(b) Find the price at time 0 of both American options. Compare your results with (a)and comment.(c) For each of the American options, describe the optimal exercising strategy.
Problem 1.We consider a two-period binomial model with the following properties: each period lastsone (1) year and the current stock price is S0 = 4. On each period, the stock price doubleswhen it moves up and is reduced by half when it moves down. The annual interest rateon the money market is 25%.  We consider four options on this market:ˆ A European call option with maturity T = 2 years and strike price K = 5;ˆ A European put option with maturity T = 2 years and strike price K = 5;ˆ An American call option with maturity T = 2 years and strike price K = 5;ˆ An American put option with maturity T = 2 years and strike price K = 5.(a) Find the price at time 0 of both European options.(b) Find the price at time 0 of both American options. Compare your results with (a)and comment.(c) For each of the American options, describe the optimal exercising strategy.(d) We assume that you sell the American put to a market participant A for the pricefound in (b). Explain how you act on the market…
What is the standard scores associated to the left of z is 0.1446
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