Please use MATLAB We want to estimate the population variance (02) of a dataset by taking a random sample andcalculating the sample variance (s2). The sample variance can be calculated using the followingformula:52 – Σ=1 (xi-x)2=n-1where:s² is the sample variance.•x_i is the value of the i-th data point..n is the sample sizex is the sample mean.Write a MATLAB script that:1. Prompts the user to enter the desired sample size (n).2. Generates n random numbers between 1 and 100 and stores them in a vector nameddata.3. Calculates the sample mean (X) of the data.4. Calculates the sample variance (s2) using the formula above and stores it in a variablenamed sample_variance.5. Rounds the sample_variance to 2 decimal places.6. Prints the sample size, the sample mean (rounded to 2 decimals), and the roundedsample variance with appropriate messages.

Matlab% Prompt user for sample sizen = input('Enter desired sample size (n): ');% Generate random…

Answered: We want to estimate the population…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Write a program that prints an mxn matrix whose dimensions are specified by the user. Let the matrix values be random variables. You must use it within the repetition cycle. Example format: Enter dimension of matrix mxn: 2 4 The 2x4 matrix is : 1 2 3 4 5 6 7 8
4x1+4x2+6x3+9x4=03x1+3x5=26x2+5x4+7x5=-46x1+8x4+2x5=54x5+7x2+6x3+8x1=-10Represent the set of equations in a matrix equation, Ax=b, where A is a square matrix and x and b are column vectors. Write the line of code to define matrix A for this problem matlab/octave language
Program a simplified Galton board in python. It is required that: The user must select the number of rows n of the board The distribution resulting from dropping the beads should be displayed on the screen. Display an animation where the number of rows n increases over time.All resulting distributions must be scaled to the interval [0, 1], so that it is possible toappreciate the convergence to the normal distribution. Consider n from 1 to 80.
Let A = {a, b, c} and B = {u, v}. Write a. A × B b. B × A
You're hosting a game show that needs a wheel of fortune. Your task is to test if the wheel of fortune works well. To do this, spin the wheel several times and write down normalized deviation angles from the initial state so that the results range between 0 and 1. The wheel of fortune is suitable for the show if the results are evenly distributed on the interval [0, 1]. You will get the following 25 observations:0.42 0.06 0.88 0.40 0.90 0.38 0.78 0.71 0.57 0.66 0.48 0.35 0.16 0.22 0.08 0.110.29 0.79 0.75 0.82 0.30 0.23 0.01 0.41 0.09Use a suitable program language (e.g. R or Python) and a Kolmogorov–Smirnov test to check whether the wheel of fortune is suitable. Determine the p-value.
Ex: Let A1 ={x, y}, A2 ={1, 2}, and A3 ={a, b}, Find A1 × A2, (A1 × A2) × A3, A1 × A2 × A3.
When the robot makes a turn, it would be useful to have an operation to perform on d to represent this turn. This is because after making a turn, the new value of d will depend on the old value of d. Complete the table for the new values of d if the robot is turning left or right.Then determine an expression in terms of d that will give the new position if the robot turns left and another expression if the robot turns right. Type these expressions in the last row of the table. Attached is the table I completed. All rows are correct except the last one. I'm not sure what my error is.
Actual timings. Instrument FrequencyCounter to use Stopwatch and StdDrawto make a plot where the x-axis is the number of calls on get() or put() and the y-axisis the total running time, with a point plotted of the cumulative time after each call.Run your program for Tale of Two Cities using SequentialSearchST and again usingBinarySearchST and discuss the results. Note : Sharp jumps in the curve may be explained by caching, which is beyond the scope of this question.
Let f R²R have the following form : f(x) = f(x₁, x₂) = 100(x2-x)² + (1 — x₁)² where x = [x1, x₂] T. (a) Draw a contour plot using python. (Hint: look for contourf in numpy).
Must be written in python W is a normal random variable with mean -4 and variance 9. Write a piece of code to compute the probability P(-1.5<W<0.4). Your code should print out the probability, rounded to 4 decimal places.
Correct answer will be upvoted else downvoted. number is called 2050-number if it is 2050, 20500, ..., (2050⋅10k for integer k≥0). Given a number n, you are asked to represent n as the sum of some (not necessarily distinct) 2050-numbers. Compute the minimum number of 2050-numbers required for that. Input The first line contains a single integer T (1≤T≤1000) denoting the number of test cases. The only line of each test case contains a single integer n (1≤n≤1018) denoting the number to be represented. Output For each test case, output the minimum number of 2050-numbers in one line. If n cannot be represented as the sum of 2050-numbers, output −1 instead.
Given any n by n square matrix, write a program that reflects the matrix across its major diagonal. For example, 9,2,2, 1,9,2, becomes 1,1,9 9,1,1, 2,9,1, 2,2,9 Explain how you got your answer.

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