(a) Suppose n = 6 and the sample correlation coefficient is r = 0.888. Is r significant at the 1% level of significance (based on atwo-tailed test)? (Round your answers to three decimal places.)t = 3.862critical t = 4.03XConclusion: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 = 0.888. Is r significant at the 1% level of significance (based on atwo-tailed test)? (Round your answers to three decimal places.)t = 5.462critical t = 3.25XConclusion: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.(c) Explain why the test results of parts (a) and (b) are different even though the sample correlation coefficient r = 0.888 is thesame in both parts. Does it appear that sample size plays an important role in determining the significance of a correlationcoefficient? Explain.As n increases, so do the degrees of freedom, and the test statistic. This produces a smaller P value.As n increases, the degrees of freedom and the test statistic decrease. This produces a smaller P value.As n decreases, the degrees of freedom and the test statistic increase. This produces a smaller P value.As n increases, so do the degrees of freedom, and the test statistic. This produces a larger P value.

For the given correlation coefficient, r = 0.888 and 0.01 significance level, we need to find the…

Answered: (a) Suppose n = 6 and the sample…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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4.40 Sloppy Writing about Correlation. Each of the following statements contains a blunder. Explain in each case what is wrong. “There is a high correlation between the gender of an adult and and their political affiliation.” “We found a strong negative correlation (r=−1.09) between the amount of time spent on social media and the number of books read in the last year.” “The correlation between height and weight of the subjects was r=0.63 centimeter per kilogram.”
(a) Suppose n = 6 and the sample correlation coefficient is r = 0.906. Is r significant at the 1% level of significance (based on a two-tailed test)? (Round your answers to three decimal places.) t = critical t = (b) Suppose n = 10 and the sample correlation coefficient is r = 0.906. Is r significant at the 1% level of significance (based on a two-tailed test)? (Round your answers to three decimal places.) t = critical t =
Help me answer the following question in the pictures with the information below: Women athletes at a certain university have a long-term graduation rate of 67%. Over the past several years, a random sample of 36 women athletes at the school showed that 21 eventually graduated. Does this indicate that the population proportion of women athletes who graduate from the university is now less than 67%? Use a 10% level of significance.
(a) Is a sample correlation coefficient p = 0.86 significant at the a = 0.01 level based on a sample size of n = 4 data pairs? What about n = 12 data pairs? (Select all that apply.) O No, because the absolute value of the given correlation coefficient is greater than or equal to that for a sample size of n = 4 and a = 0.01. O Yes, because the absolute value of the given correlation coefficient is greater than or equal to that for a sample size ofn = 4 and a = 0.01. O Yes, because the absolute value of the given correlation coefficient is smaller than that for a sample size of n = 12 and a = 0.01. O No, because the absolute value of the given correlation coefficient is smaller than that for a sample size of n = 12 and a = 0.01. O Yes, because the absolute value of the given correlation coefficient is smaller than that for a sample size of n = 4 and a = 0.01. O No, because the absolute value of the given correlation coefficient is greater than or equal to that for a sample size of n = 12…
Hi I was wondering how I could solve this
You wish to determine if there is a linear correlation between the two variables at a significance level of a = 0.01. You have the following bivariate data set. X y 64.4 45.7 43.9 165.3 63.9 -15.5 65.5 12.6 64 73.9 63 25.9 59.9 34.8 45.1 99.2 What is the critival value for this hypothesis test? rc.v. = What is the correlation coefficient for this data set? r = Your final conclusion is that... O There is insufficient sample evidence to support the claim the there is a correlation between the two variables. There is sufficient sample evidence to support the claim that there is a statistically significant correlation between the two variables.
R %24 FE %#3 %24 Is the proportion of wildfires caused by humans in the south higher than the proportion of wildfires caused by humans in the west? 374 of the 522 randomly selected wildfires looked at in the south were caused by humans while 390 of the 563 randomly selected wildfires looked at the west were caused by humans. What can be concluded at the a = 0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: :0H H1: Select an answer Select an answer Select an answer (please enter a decimal) Select an answer Select an answer Select an answer (Please enter a decimal) c. The test statistic ? O (please show your answer to 3 decimal places.) d. The p-value (Please show your answer to 4 decimal places.) e. The p-value is ? e a f. Based on this, we should elect an answer the null hypothesis. g. Thus, the final conclusion is that O The results are statistically insignificant at a = 0.01, so there is statistically…
(a) Suppose n = 6 and the sample correlation coefficient is r = 0.892. Is r significant at the 1% level of significance (based on a two-tailed test)? (Round your answers to three decimal places.) t = critical t= Conclusion: O Yes, the correlation coefficient p is significantly different from 0 at the 0.01 level of significance. O 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 = 0.892. Is r significant at the 1% level of significance (based on a two-tailed test)? (Round your answers to three decimal places.) t = critical t= Conclusion: O Yes, the correlation coefficient p is significantly different from 0 at the 0.01 level of significance. O No, the correlation coefficient p is not significantly different from 0 at the 0.01 level of significance. (c) Explain why the test results of parts (a) and (b) are different even though the sample correlation coefficient r =…
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#6
If the null hypothesis is true in a test of the Pearson’s correlation between X and Y, then __________. a. higher scores of X are paired with higher scores of Y b. none of mentioned here c. higher scores of X are paired with low and high scores of Y d. higher scores of X are paired with lower scores of Y e. lower scores of X are paired with higher scores of Y

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