The regression equation is Ŷ = 29.29 − 0.96X, the sample size is 8, and the...
The regression equation is Ŷ = 29.29 − 0.96X, the sample size is 8, and the standard error of the slope is 0.22. What is the critical value to test the significance of the slope at the 0.01 significance level?
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Critical value=3.7074
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The regression equation is Ŷ = 29.29 − 0.96X,
the sample size is 8, and the...
The regression equation is Ŷ = 30 + 2.56X, the sample size is 14, and the...
The regression equation is Ŷ = 30 + 2.56X, the sample size is 14, and the standard error of the slope is 0.97. What is the test statistic to test the significance of the slope? Multiple Choice z = −2.560 z = +2.639 t = +2.560 t = +2.639
The regression equation is Y - 30 + 2.56, the sample size is 12, and the...
The regression equation is Y - 30 + 2.56, the sample size is 12, and the standard error of the slope is 0.97. What is the critical value to test the significance of the slope at the 0.05 significance level? - 2.179 - +2.201 2.228 2 - 11.96
[8] A simple regression was performed using data on 50 states in USA. The variables were...
[8] A simple regression was performed using data on 50 states in USA. The variables were Y = current value of capital building (millions of dollars) and X = total debt held by each state bank (millions of dollars). Use α=0.01 Variables Coefficients Standard error Intercept Debt b0 = 478.54 b1 = 2.80 Sb0 = 19.43 Sb1 = 0.79 a) Use the degree of freedom (df=n-2 =48) for the t-test and find the two-tailed critical value for t by using...
The data show the chest size and weight of several bears. Find the regression equation, letting...
The data show the chest size and weight of several bears. Find the regression equation, letting chest size be the independent (x) variable. Then find the best predicted weight of a bear with a chest size of 44 inches. Is the result close to the actual weight of 213 pounds? Use a significance level of 0.05. Chest size (inches) 50 41 45 52 45 45 Weight (pounds) 321 221 265 335 307 265 Critical Values of the Pearson Correlation coefficient...
8. The data show the chest size and weight of several bears. Find the regression equation,...
8. The data show the chest size and weight of several bears. Find the regression equation, letting chest size be the independent (x) variable. Then find the best predicted weight of a bear with a chest size of 40 inches. Is the result close to the actual weight of 392 pounds? Use a significance level of 0.05. Chest_size_(inches) Weight_ (pounds) 41 328 54 528 44 418 55 580 39 296 51 503 What is the regression equation? Ŷ=____+____x (Round to...
(4) A regression software output is given below. df ANOVA Source Regression Residual Total 4 SS...
(4) A regression software output is given below. df ANOVA Source Regression Residual Total 4 SS 227,09 153,07 380,16 MS 56,8 6,1 25 29 Variables Intercept X1 X2 X3 X4 Standard Coefficients Error 68,33 8,9 0,85 0,3 -0,33 0,8 -0,81 0,2 -0,58 0,2 a. How large is the sample size? b. Write the regression equation. Interprete the coefficient of X2. c. Determine and interprete the coefficient of determination. d. Conduct a global test of hypothesis fort he meaning of the...
For the regression equation, Ŷ = –2X + 6, if the X value is above the...
For the regression equation, Ŷ = –2X + 6, if the X value is above the mean (positive deviation), what can be determined about the predicted Y value?
A sample mean, sample size, and population standard deviation are given. Use the one-mean z-test to...
A sample mean, sample size, and population standard deviation are given. Use the one-mean z-test to perform the required hypothesis test at the given significance level. Use the critical -value approach. 20) -7.1, n = 18,0 = 1.5, Ho: u = 10; Ha: < 10, a = 0.01 A) z = -8.20; critical value=-2.33; reject Ho B) Z -8.20; critical value = 1.96; do not reject Ho C) Z=-8.20; critical value = -2.33; do not reject Ho D) 2 --8.20;...
Using 17 observations on each variable, a computer program generated the following multiple regression model: ŷ...
Using 17 observations on each variable, a computer program generated the following multiple regression model: ŷ = 88.2 +7.03x, + 1.69x2 - 9.84x, If the standard errors of the coefficients of the independent variables are, respectively, 4.78, 0.92, and 3.38 can you conclude that the independent variable X, is needed in the regression model? Let B. By, and B, denote the coefficients of the 3 variables in this model, and use a two-sided hypothesis test and significance level of 0.05...
please show work 1) The distribution of sample means (for a specific sample size) consists of...
please show work
1) The distribution of sample means (for a specific sample size) consists of a. All the scores contained in the sample x b. All the scores contained in the population x C. All the samples means that could be obtained (for the specific sample size) d. The specific sample mean computed for the sample of scores 2) A sample of n=25 scores is determined to have a standard error of 2 points. What is the standard deviation...
The regression equation is Y - 30 + 2.56, the sample size is 12, and the standard error of the slope is 0.97. What is the critical value to test the significance of the slope at the 0.05 significance level? - 2.179 - +2.201 2.228 2 - 11.96
The data show the chest size and weight of several bears. Find the regression equation, letting chest size be the independent (x) variable. Then find the best predicted weight of a bear with a chest size of 44 inches. Is the result close to the actual weight of 213 pounds? Use a significance level of 0.05. Chest size (inches) 50 41 45 52 45 45 Weight (pounds) 321 221 265 335 307 265 Critical Values of the Pearson Correlation coefficient...
(4) A regression software output is given below. df ANOVA Source Regression Residual Total 4 SS 227,09 153,07 380,16 MS 56,8 6,1 25 29 Variables Intercept X1 X2 X3 X4 Standard Coefficients Error 68,33 8,9 0,85 0,3 -0,33 0,8 -0,81 0,2 -0,58 0,2 a. How large is the sample size? b. Write the regression equation. Interprete the coefficient of X2. c. Determine and interprete the coefficient of determination. d. Conduct a global test of hypothesis fort he meaning of the...
A sample mean, sample size, and population standard deviation are given. Use the one-mean z-test to perform the required hypothesis test at the given significance level. Use the critical -value approach. 20) -7.1, n = 18,0 = 1.5, Ho: u = 10; Ha: < 10, a = 0.01 A) z = -8.20; critical value=-2.33; reject Ho B) Z -8.20; critical value = 1.96; do not reject Ho C) Z=-8.20; critical value = -2.33; do not reject Ho D) 2 --8.20;...
Using 17 observations on each variable, a computer program generated the following multiple regression model: ŷ = 88.2 +7.03x, + 1.69x2 - 9.84x, If the standard errors of the coefficients of the independent variables are, respectively, 4.78, 0.92, and 3.38 can you conclude that the independent variable X, is needed in the regression model? Let B. By, and B, denote the coefficients of the 3 variables in this model, and use a two-sided hypothesis test and significance level of 0.05...
please show work
1) The distribution of sample means (for a specific sample size) consists of a. All the scores contained in the sample x b. All the scores contained in the population x C. All the samples means that could be obtained (for the specific sample size) d. The specific sample mean computed for the sample of scores 2) A sample of n=25 scores is determined to have a standard error of 2 points. What is the standard deviation...
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