Problem 2: Load in the file "data.csv". Assume that this is a random sample from some population with mean μ and variance σ2 (a) Plot a histogram of the data. (b) Compute a 95% confidence interval for the population mean μ using the formula n)Un-1,.975- Hint: tn-1,975 can be computed with qt (.975, df-n-1)) (c) Compute a p-value for the hypothesis Ho : μ 5 versus HA : μ > 5, based (Hint: The p-value can be computed using on the test statistic T - X5 1-pt (T, df--1)) (d) Based on the p-value, do we reject the null hypothesis at α ,01? (e) What is the smallest significance level α for which we would reject the null?
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"1",4.69816621546105 "2",4.44756510829146 "3",6.84100846766469 "4",7.01358258791867 "5",3.12935822296976 "6",5.14762683649335 "7",2.54905695207...
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Amplitude=3;
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n=0:399;
t=0:1/fs: n*1/fs-1/fs;
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fftSignal= fft(signal);
fftSignal=f ftshift (fftSignal);
f=fs/2*linspace(-1,1,fs);
plot(f,abs(fftsignal);
xlabel('Frequency(Hz)’)
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