Q2/ (A) Two water samples x and y have given the following statistical results: 50 40 > x; = 300, yi = 280,S, = 1.75, Sy = 1.89 %3D %3D %3D i-1 i=1 (1) Determine which of the two samples is more variant? (2) Calculate the overall arithmetic mean and standard deviation?

Q2/ (A) Two water samples x and y have given the following statistical results: 50 40 > x; = 300, yi = 280,S, = 1.75, Sy = 1.89 %3D %3D %3D i-1 i=1 (1) Determine which of the two samples is more variant? (2) Calculate the overall arithmetic mean and standard deviation?

Name: Q2/ (A) Two water samples x and y have given the following statistica
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: Q2/ (A) Two water samples x and y have given the following statisticalresults:5040Σ> x; = 300, yi = 280,S = 1.75, Sy = 1.89%3D%3D%3Di=1i=1(1) Determine which of the two samples is more variant?(2) Calculate the overall arithmetic mean and standard d

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

2.4
Which of the following samples would have the largest standard error of the mean? It's not possible to tell n = 32 scores from a population with σ = 10 n = 89 scores from a population with σ = 20 n = 88 scores from a population with σ = 10 n =18 scores from a population with σ = 20
21
What is the minimum percentage of data values that will come within 3.5 standard deviations from the mean? а. 84% • b. 92% с. 60% d. 75%
Let x = age in years of a rural Quebec woman at the time of her first marriage. In the year 1941, the population variance of x was approximately ?2 = 5.1. Suppose a recent study of age at first marriage for a random sample of 41 women in rural Quebec gave a sample variance s2 = 2.9. Use a 5% level of significance to test the claim that the current variance is less than 5.1. Find the value of the chi-square statistic for the sample. (Round your answer to two decimal places.) What are the degrees of freedom?
Q 1 If X is a random variable with distribution X: 0 1 2 3 P(X): 1111 44 44 Find the mean, Variance and standard deviation. Q 2 If X is a random variable with distribution X: 0 12 3 4 P(X): 0 K 2K 3K 4K Explain the following: (i) For which value of K, P(X) is probability mass function? (ii) Find the following probabilities: (a) P(1 ≤ X < 4). (b) P(2 < X < 4). Q3 A box contains 6 balls. Two are numbered 4, two are numbered 5, and two are numbered 6. The balls are mixed and one is selected at random. After a ball is selected, its number is recorded. Then it is replaced. If the experiment is repeated many times, find the variance (²) and standard deviation (o) of the numbers on the balls. Q4 A special six-sided die is made in which 2 sides have 6 spots, 3 sides have 4 spots, and 1 side has 1 spot. If the die is rolled, find the expected value of the number of spots that will occur. Q5 Let X-B(4,0.6). Find the following (i) P(X = 2) (ii) P(1 < X < 4) (iii) Also find mean and variance. Q6…
Find the Q1, Q3 and IQR of the 1% hydrogen peroxide
29
After you estimate a simple linear regression you obtain the following sample regression function: Y₁ = 8.8 +0.7091 Xį With an r² of 0.784. The observed dependent variable used for the regression is: Y 9 675 40 40 40 6 5 5 5 5 1 1 Compute the sample variance of X? 8.45 10.79 9.17 7.19 Cannot be computed with the provided information.
Answer 7 8 9 handwritten
The following output comes from regression using the actual HW9 scores and the Final test scores from intro stats one semester. Sample size: 50R (correlation coefficient) = 0.3658R-sq = 0.1338Estimate of error standard deviation: 10.36256Parameter estimates: Parameter Estimate Std. Err. DF T-Stat P-Value Intercept 43.558118 11.1716 48 3.899 0.0003 Slope 0.360048 0.132225 48 2.723 0.009 Assume no assumptions are violated. Form a 87% Confidence interval for how much your final is supposed to increase for each problem done on homework 9.Use 5 decimal places
10