Suppose that
Suppose that \(\left(\xi_{j}\right)^{\infty}=1\) is a sequence of independent identically distributed \((i . i . d .)\) continuous random variables.
- Suppose that each \(\xi_{i}\) has a probability density function \(p_{i}(x)=\left\{\begin{array}{c}\frac{\beta}{x^{x}}, x \geq 1 \\ 0, x<1\end{array}\right.\), where \(\alpha, \beta \in\)
R.
- Let \(S_{n}=\sum_{i=1}^{n} \xi_{i}\).
- Let \(S_{n}=\frac{s_{n}-\operatorname{mE}\left(\xi_{0}\right)}{\sqrt{n} \operatorname{Var}(\mathcal{B})}\).
a. Find a condition on \(\alpha\) and a condition on \(\beta\) (as a function of \(\alpha\) ) which together make \(f_{1}(x)\) a probability density function.
b. Find conditions on \(\alpha\) which guarantee that \(\lim _{n \rightarrow \infty} S_{n}\) will converge in distribution to a standard normal random variable. (Hint: what are the hypotheses of the central limit theorem?)
c. Find the probability density function for \(Z=\xi_{1}+\xi_{2}\), where each \(\xi\), has density function \(p_{i}(x)=\left\{\begin{array}{r}e^{-x}, x \geq 0 \\ 0, x<0\end{array}\right.\), To eam full credit, you must simplify your answer as much as possible.
Homework Answers
find an expression for the area of the region under the graphf(x)=x^4 on the interval...
find an expression for the area of the region under the graph f(x)=x^4 on the interval [1,7]. use right-Hand endpoints as sample points choices1. area \(=\lim _{n \rightarrow \infty} \sum_{i=1}^{n}\left(1+\frac{7 i}{n}\right)^{4} \frac{7}{n}\)2. area \(=\lim _{n \rightarrow \infty} \sum_{i=1}^{n}\left(1+\frac{9 i}{n}\right)^{4} \frac{6}{n}\)3. area \(=\lim _{n \rightarrow \infty} \sum_{i=1}^{n}\left(1+\frac{6 i}{n}\right)^{4} \frac{6}{n}\)4. area \(=\lim _{n \rightarrow \infty} \sum_{i=1}^{n}\left(1+\frac{7 i}{n}\right)^{4} \frac{6}{n}\)5. area \(=\lim _{n \rightarrow \infty} \sum_{i=1}^{n}\left(1+\frac{6 i}{n}\right)^{4} \frac{7}{n}\)6. area \(=\lim _{n \rightarrow \infty} \sum_{i=1}^{n}\left(1+\frac{9 i}{n}\right)^{4} \frac{7}{n}\)
Determine whether the series converges, and if so, find its sum.
Determine whether the series converges, and if so, find its sum. (1) \(\sum_{n=1}^{\infty} 3^{-n} 8^{n+1}\)\((2) \sum_{n=2}^{\infty} \frac{1}{n(n-1)}\)(3) \(\sum_{n=0}^{\infty}(-3)\left(\frac{2}{3}\right)^{2 n}\)(4) \(\sum_{n=1}^{\infty} \frac{1}{e^{2 n}}\)(5) \(\sum_{n=1}^{\infty} \ln \frac{n}{n+1}\)(6) \(\sum_{n=1}^{\infty}[\arctan (n+1)-\arctan n]\)(7) \(\sum_{n=1}^{\infty} \ln \left(\frac{n^{2}+4}{2 n^{2}+1}\right)\)(8) \(\sum_{n=1}^{\infty} \frac{1+2^{n}}{3^{n}}\)(9) \(\sum_{n=1}^{\infty}\left[\cos \frac{1}{n^{2}}-\cos \frac{1}{(n+1)^{2}}\right]\)
(2 points) The area A of the region S that lies under the graph of the...
(2 points) The area \(A\) of the region \(S\) that lies under the graph of the continuous function \(f\) on the interval \([a, b]\) is the limit of the sum of the areas of approximating rectangles:$$ A=\lim _{n \rightarrow \infty}\left[f\left(x_{1}\right) \Delta x+f\left(x_{2}\right) \Delta x+\ldots+f\left(x_{n}\right) \Delta x\right]=\lim _{n \rightarrow \infty} \sum_{i=1}^{n} f\left(x_{i}\right) \Delta x $$where \(\Delta x=\frac{b-a}{n}\) and \(x_{i}=a+i \Delta x\).The expression$$ A=\lim _{n \rightarrow \infty} \sum_{i=1}^{n} \frac{\pi}{8 n} \tan \left(\frac{i \pi}{8 n}\right) $$gives the area of the function \(f(x)=\) on...
Determine whether the series converges or diverges.
Determine whether the series converges or diverges.(1) \(\sum_{n=1}^{\infty} \frac{e^{1 / n}}{n^{2}}\)(2) \(\sum_{n=1}^{\infty}\left(\frac{2}{\sqrt{n}}+\frac{(-1)^{n}}{3^{n+1}}\right)\)(3) \(\sum_{n=1}^{\infty} \frac{5-2 \sin n}{n}\)(4) \(\sum_{n=1}^{\infty} \frac{3+\cos n}{n^{3 / 2}}\)(5) \(\sum_{n=0}^{\infty} \frac{\sqrt{n^{2}+2}}{n^{4}+n^{2}+5}\)(6) \(\sum_{n=1}^{\infty=1}\left(1+\frac{1}{n}\right)^{n}\)(7) \(\sum_{n=1}^{\infty} \frac{n+1}{n 2^{n}}\)(8) \(\sum_{n=1}^{\infty} \frac{\arctan n}{n^{4}}\)(9) \(\sum_{n=1}^{\infty} n \sin \frac{1}{n}\)
Find the periodic solutions of the differential equations
Find the periodic solutions of the differential equations \((a) \frac{\mathrm{dy}}{\mathrm{dx}}+\mathrm{ky}=\mathrm{f}(\mathrm{x}),(b) \frac{\mathrm{d}^{3} \mathrm{y}}{\mathrm{d}^{3} \mathrm{x}}+\mathrm{ky}=\mathrm{f}(\mathrm{x})\)where \(k\) is a constant and \(f(x)\) is a \(2 \pi\) - periodic function.Consider a Fourier series expansion for \(f(x)\) using the complex form, \(f(x)=\sum_{n=-\infty}^{n=+\infty} f_{n} e^{i n x}\) and try a solution of the form \(y(x)=\sum_{n=-\infty}^{n=+\infty} y_{n} e^{i n x}\)
please answer all 9. Find the interval of convergence of the power series. (Be sure to include a check for conve...
9. Find the interval of convergence of the power series. (Be sure to include a check for convergence at the endpoints of the interval.)a) \(\sum_{n=0}^{\infty}\left(\frac{3 x}{5}\right)^{n}\)b) \(\sum_{n=0}^{\infty} \frac{2^{n}(x-2)^{n}}{3 n}\)
If the series
If the series \(\sum_{n=1}^{\infty} a_{n}\) converges and \(a_{n}>0\) for all \(n\), which of the following must be true?(A) \(\lim _{n \rightarrow \infty}\left|\frac{a_{n+1}}{a_{n}}\right|=0\)(B) \(\left|a_{n}\right|<1\)for all \(n\)(C) \(\sum_{n=1}^{\infty} a_{n}=0\)(D) \(\sum_{n=1}^{\infty} n a_{n}\) diverges.(E) \(\sum_{n=1}^{\infty} \frac{a_{n}}{n}\) converges.
Answer in MATLAB please.
1. Consider a geometric series of \(\sum_{n=1}^{\infty} g r^{n-1}\). Plot the \(\mathrm{n}\) -th term \(a_{n}\), and the partial sum \(s_{n}\) versus \(n\) under the following two conditions.i) with \(g=12\), and \(\mathrm{r}=2 / 3\),ii) with \(g=12\), and \(r=3 / 2\).Which of the (i) or (ii) converges? For the convergent one, approximate the total sum, i.e. \(\sum_{n=1}^{\infty} g r^{n-1}\) from your plot and draw a line on the plot to demonstrate this.2. Using the following inequality, find the value of \(\sum_{n=1}^{\infty} \frac{1}{n^{2}}\)...
Find The Singularities Of The Hyper Geometric Differential Equation (HGDD) In Finite And Infinite Regions
a) \([x(1-x), \gamma-(1+\alpha+\beta) x,-\alpha \beta]{ }_{2} F_{1}=0\) Hiper Geometrik Diferansiyel Denkleminin (HGDD) sonlu ve sonsuz bölgelerdeki tekilliklerini bulunuz, \(x=0\) etrafinda seri çõzümủnü bularak \(\quad{ }_{2} F_{1}(\alpha, \beta, \gamma ; x)\) çözumünü tesbit ediniz.b) \(x=\beta s\) dönüșumũ yaparak yeni elde edilen diferansiyel denklemde \(\beta \rightarrow \infty^{\prime}\) a gitmesi durumunda sonlu bōlgedeki tekilliklerden birisinin sonsuz bölgeye gittiğini göstererek HGDD'in KHGDD'e dönüştüğũnũ gōsteriniz.c) HGDD'l \(x \rightarrow G(x)\) noktasal dōnüșüm ile genelleștirerek daha sonra invaryant forma sokunuz (yani, IFGHGDD'I bulunuz). Bulacağanız sonuç aşağıdaki formda...
7. Use the Alternating Series Test to determine the convergence or divergence of the series
7. Use the Alternating Series Test to determine the convergence or divergence of the series a) \(\sum_{n=1}^{\infty} \frac{(-1)^{n} \sqrt{n}}{2 n+1}\)b) \(\sum_{n=1}^{\infty} \frac{(-1)^{n} n}{2 n-1}\)8. Use the Ratio Test or the Root Test to determine the convergence or divergence of the seriesa) \(\sum_{n=0}^{\infty}\left(\frac{4 n-1}{5 n+7}\right)^{n}\)b) \(\sum_{n=0}^{\infty} \frac{\pi^{n}}{n !}\)
(2 points) The area \(A\) of the region \(S\) that lies under the graph of the continuous function \(f\) on the interval \([a, b]\) is the limit of the sum of the areas of approximating rectangles:$$ A=\lim _{n \rightarrow \infty}\left[f\left(x_{1}\right) \Delta x+f\left(x_{2}\right) \Delta x+\ldots+f\left(x_{n}\right) \Delta x\right]=\lim _{n \rightarrow \infty} \sum_{i=1}^{n} f\left(x_{i}\right) \Delta x $$where \(\Delta x=\frac{b-a}{n}\) and \(x_{i}=a+i \Delta x\).The expression$$ A=\lim _{n \rightarrow \infty} \sum_{i=1}^{n} \frac{\pi}{8 n} \tan \left(\frac{i \pi}{8 n}\right) $$gives the area of the function \(f(x)=\) on...
9. Find the interval of convergence of the power series. (Be sure to include a check for convergence at the endpoints of the interval.)a) \(\sum_{n=0}^{\infty}\left(\frac{3 x}{5}\right)^{n}\)b) \(\sum_{n=0}^{\infty} \frac{2^{n}(x-2)^{n}}{3 n}\)
If the series \(\sum_{n=1}^{\infty} a_{n}\) converges and \(a_{n}>0\) for all \(n\), which of the following must be true?(A) \(\lim _{n \rightarrow \infty}\left|\frac{a_{n+1}}{a_{n}}\right|=0\)(B) \(\left|a_{n}\right|<1\)for all \(n\)(C) \(\sum_{n=1}^{\infty} a_{n}=0\)(D) \(\sum_{n=1}^{\infty} n a_{n}\) diverges.(E) \(\sum_{n=1}^{\infty} \frac{a_{n}}{n}\) converges.
1. Consider a geometric series of \(\sum_{n=1}^{\infty} g r^{n-1}\). Plot the \(\mathrm{n}\) -th term \(a_{n}\), and the partial sum \(s_{n}\) versus \(n\) under the following two conditions.i) with \(g=12\), and \(\mathrm{r}=2 / 3\),ii) with \(g=12\), and \(r=3 / 2\).Which of the (i) or (ii) converges? For the convergent one, approximate the total sum, i.e. \(\sum_{n=1}^{\infty} g r^{n-1}\) from your plot and draw a line on the plot to demonstrate this.2. Using the following inequality, find the value of \(\sum_{n=1}^{\infty} \frac{1}{n^{2}}\)...
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