MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
5th Edition
ISBN: 9781118629864
Author: Amos Gilat
Publisher: WILEY
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Chapter 6, Problem 32P

In a one-dimensional random walk, the position x of a walker is computed by:

x j = x j + s

where s is a random number. Write a program that calculates the number of steps required for the walker to reach a boundary x = ± B . Use MATLAB’s built-in function randn(1, 1) to calculate s. Run the program 100 times (by using a loop) and calculate the average number of steps when B = 10.

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PS 9 Two films are shown on screen A and screen B at a cinema each evening. The numbers of people viewing the films on 12 consecutive evenings are shown in the back-to-back stem-and-leaf diagram. Screen A (12) Screen B (12) 8 037 34 7 6 4 0 534 74 1645678 92 71689 Key: 116|4 represents 61 viewers for A and 64 viewers for B A second stem-and-leaf diagram (with rows of the same width as the previous diagram) is drawn showing the total number of people viewing films at the cinema on each of these 12 evenings. Find the least and greatest possible number of rows that this second diagram could have. TIP On the evening when 30 people viewed films on screen A, there could have been as few as 37 or as many as 79 people viewing films on screen B.
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MATLAB: An Introduction with Applications

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