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If the correlation coefficient value for the two variables is 0.865 with sample size 15 each....
A sample of two variables of size 40 produces a correlation coefficient of r = 0.682....
A sample of two variables of size 40 produces a correlation coefficient of r = 0.682. What is the point estimate for the population correlation coefficient, ?? Construct a 95% confidence interval for ?.
(a) Suppose n = 6 and the sample correlation coefficient is r=0.894. IS significant at the...
(a) Suppose n = 6 and the sample correlation coefficient is r=0.894. IS significant at the 1% level of significance (based on a two-tailed test)? (Round your answers to three decimal places.) critical Conclusion: Yes, the correlation coefficient p is significantly different from 0 at the 0.01 level of significance. No, the correlation coefficient p is not significantly different from 0 at the 0.01 level of significance. (b) Suppose n = 10 and the sample correlation coefficient is r =...
(a) Supposen - 6 and the sample correlation coefficient is r=0.884. Is significant at the 1%...
(a) Supposen - 6 and the sample correlation coefficient is r=0.884. Is significant at the 1% level of significance (based on a two-tailed test)? (Round your answers to three decimal places) critical Condusion: Yes, the correlation coefficient p is significantly different from 0 at the 0.01 level of significance No, the correlation coefficient is not significantly different from 0 at the 0.01 level of significance (b) Supposen - 10 and the sample correlation coefficient is 0.884. Isr significant at the...
a) Calculate the Pearson Correlation Coefficient for these two variables and b) test whether the correlation...
a) Calculate the Pearson Correlation Coefficient for these two variables and b) test whether the correlation is significantly different from 0. Run the test at a 5% level of significance. Give each of the following for part b to receive full credit: 1) the appropriate null and alternative hypotheses; 2) the appropriate test; 3) the decision rule; 4) the calculation of the test statistic; and 5) your conclusion including a comparison to alpha or the critical value. You MUST show...
What is the critical value for the linear correlation coefficient, r, for a sample of size...
What is the critical value for the linear correlation coefficient, r, for a sample of size n = 15 with α = .01 ? (Round to the nearest thousandth. The linear correlation coefficient for a set of paired variables is r = .897. What proportion of the variation in y can be explained by the linear relationship between x and y? (Type the percentage rounded to the nearest hundredth without the % sign. The linear regression equation for a set...
Use the sample correlation r=0.42 and the sample size n=25 to see if there is evidence...
Use the sample correlation r=0.42 and the sample size n=25 to see if there is evidence that the population correlation between the two variables is different than zero. (a) What are the null and alternative hypotheses? (b) What is the test statistic? Round your answer to three decimal places (c) What are the degrees of freedom? Enter the exact answer. (d) What is the p-value. Round your answer to three decimal places. (e) What is the conclusion, using a 5%...
1-2. The sample of n = 30 people is selected and the sample correlation between two...
1-2. The sample of n = 30 people is selected and the sample correlation between two variables is r = 0.468. 1. What is the test statistic value for testing whether the true population correlation coefficient is equal to zero? (calculate t-test statistic) 2. What is the t- critical value for alpha= 0.01. and what you can conclude about population correlation ( is there significant correlation between two variables).
For a random sample of size n = 25, the correlation is r = 0.31 for...
For a random sample of size n = 25, the correlation is r = 0.31 for normal random variables X and Y. Answer the questions for the hypothesis test. Use a level of significance of a =0.08. Ho: p=0 H:P+0 a. The critical value is Z = b. The test statistic is Z= c. The p-value is d. The hypothesis (should, should not) be rejected.
Test for a positive correlation using the sample correlation r=0.33 and the sample size n=30. State...
Test for a positive correlation using the sample correlation r=0.33 and the sample size n=30. State the null and alternative hypotheses. Find the test statistic. Round your answer to two decimal places. t= Find the p-value. Round your answer to three decimal places. The p-value is . What is the conclusion, using a 5% significance level? ...
1) The correlation coefficient determined for two variables has a value of 0.89. Describe, in words,...
1) The correlation coefficient determined for two variables has a value of 0.89. Describe, in words, the correlation between the two variables. 2) The correlation coefficient determined for two variables has a value of 0.13. Describe, in words, the correlation between the two variables. 3) The correlation coefficient determined for two variables has a value of -0.93. Describe, in words, the correlation between the two variables.
(a) Suppose n = 6 and the sample correlation coefficient is r=0.894. IS significant at the 1% level of significance (based on a two-tailed test)? (Round your answers to three decimal places.) critical Conclusion: Yes, the correlation coefficient p is significantly different from 0 at the 0.01 level of significance. No, the correlation coefficient p is not significantly different from 0 at the 0.01 level of significance. (b) Suppose n = 10 and the sample correlation coefficient is r =...
(a) Supposen - 6 and the sample correlation coefficient is r=0.884. Is significant at the 1% level of significance (based on a two-tailed test)? (Round your answers to three decimal places) critical Condusion: Yes, the correlation coefficient p is significantly different from 0 at the 0.01 level of significance No, the correlation coefficient is not significantly different from 0 at the 0.01 level of significance (b) Supposen - 10 and the sample correlation coefficient is 0.884. Isr significant at the...
a) Calculate the Pearson Correlation Coefficient for these two variables and b) test whether the correlation is significantly different from 0. Run the test at a 5% level of significance. Give each of the following for part b to receive full credit: 1) the appropriate null and alternative hypotheses; 2) the appropriate test; 3) the decision rule; 4) the calculation of the test statistic; and 5) your conclusion including a comparison to alpha or the critical value. You MUST show...
For a random sample of size n = 25, the correlation is r = 0.31 for normal random variables X and Y. Answer the questions for the hypothesis test. Use a level of significance of a =0.08. Ho: p=0 H:P+0 a. The critical value is Z = b. The test statistic is Z= c. The p-value is d. The hypothesis (should, should not) be rejected.
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