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?

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

Methods 23. The data from exercise 1 follow. X3B 1 2 3 4 5 Yi 3 7 5 11 14 a. Compute the mean square error using equation (14.15). b. Compute the standard error of the estimate using equation (14.16). c. Compute the estimated standard deviation of b, using equation (14.18). d. Use the t test to test the following hypotheses (a = .05): Ho: B, = 0 HiB, #0 e. Use the F test to test the hypotheses in part (d) at a .05 level of significance. Present the results in the analysis of variance table format.