Q2/ (A) Two water samples x and y have given the following statisticalresults:5040300,2Yi = 280,Sx = 1.75, Sy = 1.89%3D%3Di=1i=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:5040300,2Yi = 280,Sx = 1.75, Sy = 1.89%3D%3Di=1i=1(1) Determine which of the two samples is more variant?(2) Calculate the overall arithmetic mean and standard deviation?

It is an important part of statistics. It is widely used.

Math

Statistics

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

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

→ xC 0 D Remaining Time: 1 hour, 45 minutes, 21 seconds. v Question Completion Status: 2x= JUT The sample correlation coefficient is: O 0.8990 O 0.8854 O 0.9202 O 0.8143 1.5 poi QUESTION 23 research worker wants to determine the average time it takes a mechanic to rotate the tires of a car, and she wants to be able to assert with 9596 confidence that the mean of her sample is off by at most 0.4 minutes. If she can presume from past experience that the actual time follows normal distribution with a standard deviation of 1.5 minutes, how large the sample will she have to take? O 5 O 39 O 38 O 54 Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Close Window
C 14-34. Suppose the waist measurements W of 800 girls are normally distributed with mean oms and standard deviation 5 cms. Find the :number N of girls with waists- (i) between 65 cms and 70 cms; (ii) greater than or equal to 72 cms. 66 (1)
> Question 11 A random sample of size 40 yields a standard deviation of 6. At a = 0.10, test the claim that the population standard deviation is not 4. 1. The alternate hypothesis is Ha: Οσ#6 Oo + 4 2. This is a OleftO twoO right tailed test with d.f. = 3a. The STS (to 2 decimals) is X 3b. The P-value (to 3 decimals) is: 4a. At a = 0.10, the decision is: O Accept Ho O Do not reject Ho O Reject Ho O Accept Ha 4b. The conclusion is: O There is insufficient evidence to support the claim that population standard deviation is not 4 O There is sufficient evidence to support the claim that population standard deviation is not 4 O There is sufficient evidence to reject the claim that population standard deviation is not 4 OThere is insufficient evidence to reject the claim that population standard is not 4 MacBook Air F2 F3 000 F4 F5 F6 F7 F8 F9 2$ & 3 5
On an exam with µ = 52, a person has a score of X = 44. Which value for the standard deviation would give this person the highest position in the class distribution? Group of answer choices σ = 2 σ = 4 σ = 8 This is impossible to determine based on the information provided..
24
2. Compute the mean absolute deviation (MAD) and mean square error (MSE) for the following errors: Period (t) 1 2 3 6 4 5 7 Forecast (F;) 6.5 3.8 9.2 1.2 2.3 8.3 6.5 Error (e,) -2.3 | 1.3 -0.9 | 2.1 0.5 | -3.8 | 2.9 Calculate the actual values also.
Part C. To reduce the percentage of defective chips the company...
6.2-2
Consider the data. 1 2 3 4 5 10 15 SSE (a) Compute the mean square error using equation s = MSE = (Round your answer to two decimal places.) n - 2 SSE (b) Compute the standard error of the estimate using equation S = V MSE = (Round your answer to three decimal places.) n - 2 (c) Compute the estimated standard deviation of b, using equation sS. = . (Round your answer to three decimal places.) E(x, - x)2 (d) Use the t test to test the following hypotheses (a = 0.05): Ho:B1 = 0 Hoißa Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value = %3D State your conclusion. O Do not reject Ho. We cannot conclude that the relationship between x and y is significant. O Do not reject Ho. We conclude that the relationship between x and y is significant. O Reject H.. We cannot conclude that the relationship between x and y is significant. O Reject Ho. We conclude that the relationship between x and y is…
11:02 AM Tue Dec 12 Quick Notes Aa [0] 34% 3 Suppose the mean height for first grade Children is 90 Cm and the Standard deviation is 12 cm. Take a Sample of Size n=36 Find the 81st Percentile for the Sample mean height
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
QUESTION 18 Use the following data on distance and interaction frequency: y Interaction frequency x distance Mean 10.3 6.2 Std. dev. What is the standard error of the estimate (i.e., the standard deviation of the residuals)? 4.1 2.8 O 3.052 O 3.214 O 3.117 O 3.250