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please help

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Manu Young
Manu Young 2011-6-25
关闭： MATLAB Answer Bot 2021-8-20
Simulation of tossing a pair of fair dice can be done using the following two MATLAB lines X=ceil(6*rand(1,n)); Y=ceil(6*rand(1,n)); where n is the number of tosses. Write a MATLAB script to determine the probability P[X+Y=7]. Use a “for” loop to run simulation fifty times with n = 10000. Plot the 100 estimated probability values along with the theoretical result of P[X+Y=7]. 2. Write a MATLAB script to do the following a. Create 10000 random variables uniformly distributed between 2 and 4. b. Create a histogram to approximate the actual probability density function. c. Superimpose the actual probability density function to the above histogram
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Manu Young
Manu Young 2011-6-25
I have tried Simulation of tossing a pair of fair dice can be done using the following two MATLAB lines X=ceil(6*rand(1,n)); Y=ceil(6*rand(1,n)); where n is the number of tosses. Write a MATLAB script to determine the probability P[X+Y=7]. Use a “for” loop to run simulation fifty times with n = 10000. Plot the 100 estimated probability values along with the theoretical result of P[X+Y=7]
came up with
n= 10000
p=zeros(100,1);
for k=1:100, % 100 trials
X=ceil(6*rand(1,n));
Y=ceil(6*rand(1,n));
w = X + Y;
p(k)=sum(w ==7)/n;
end
plot(1:100,p)
xlabel('number of trials')
ylabel('Average frequency ratio')
Not very about my answer
Thanks
Rick Rosson
Rick Rosson 2011-6-25
It looks like you are making good progress. What is your question?

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Walter Roberson
Walter Roberson 2011-6-25
Refer to the assistance already given to southie on the identical question: http://www.mathworks.com/matlabcentral/answers/10228-help-me-please

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