6. For a sample of n= 25 individuals, at least how large must a Pearson correlation be in order for the null hypothesis to be rejected for a two-tailed test with α = .05? 0.462 0.337 0.397 0.444
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6. For a sample of n= 25 individuals, at least how large must a Pearson
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- Provide an interpretation for the following SPSS output: A researcher wanted to test the relationship between number of fries eaten per week and number of vegetables eaten per week by the sample. Number of times Number of times eat fries per eat vegetables week per week Number of times eat fries per Pearson Correlation 1 -.067 week Sig. (2-tailed) .005 N 1750 1750 Number of times eat Pearson Correlation -.067 1 vegetables per week Sig. (2-tailed) N .005 1750 1750 **Correlation is significant at the 0.01 level (2-tailed). Edit View Insert Format Tools Table 12pt v Paragraph14. A correlation of r = .50 in a sample of 15 participants is statistically significant for a two-tailed test with α = .05. True FalseWhich of the following is not a cause of perfect multicollinearity? Select all that apply. One of the explanatory variables is equal to half of another explanatory variable for 100% of the observations in the sample. The correlation between two of the explanatory variables is 1.00. One of the explanatory variables is equal to half of another explanatory variable for 20% of the observations in the sample. A dummy variable for male is included at the same time as a dummy variable for non-male. One of the regressors is X and another regressor is X².
- The accompanying table lists the ages of acting award winners matched by the years in which the awards were won. Construct a scatterplot, find the value of the linear correlation coefficient r, and find the P-value of r. Determine whether there is sufficient evidence to support a claim of linear correlation between the two variables. Should we expect that there would be a correlation? Use a significance level of = 0.05. E Click the icon to view the ages of the award winners. Construct a scatterplot. Choose the correct graph below. OA. OB. Oc. OD. 70- 70- Q 70- 70- ... ++++++ 20 - 20 Best Actress (years) 20- 70 20 Best Actress (years) 20- 20 Best Actress (years) 70 20 Best Actress (years) 70 70 Best Actresses and Best Actors Best Actress 27 29 30 58 33 34 46 30 62 22 44 51 D Best Actor 44 36 38 44 53 46 56 49 41 52 44 33An analysis of variance is used to evaluate the mean differences for a research study comparing four treatments with a separate sample of n = 8 in each treatment. If the data produce an F-ratio of F = 5.50, then which statistical decision is correct? a. Reject the null hypothesis with α = .05 but not with α = .01. b. Reject the null hypothesis with either α = .05 or α = .01. c. Fail to reject the null hypothesis with either α = .05 or α = .01. d. There is not enough information to make a statistical decision.(i) State the hyptheses. (ii) Sketch a scatter plot tat best represents the data. (iii) Compute the value of the correlation coefficient. Round the answer to at least three decimal places. (iv) Find the P-value. Round the answer to at least four decimal places. Test the significance of r at α=0.05. Determine whether to reject or not reject the null hypothesis.
- HELP ASAP.Using a sample that has n=50 pair of data, we get a correlation coefficient r=-0.269 for the following null and alternative hypotheses determine and compute the test statistic value: HO: p=0 H1: pe 0 O a t=7.51 O b. z=7.51 O o.z=-0. 16 Odt=-1.08A repeated-measures analysis of variance F(2, 18) = 5.40. For this result, which of the following is the correct statistical decision? a. Reject the null hypothesis with either a = .05 or a = .01 b. Reject the null hypothesis with a = .05 but not with a = .01 c. Fail to reject the null hypothesis with either a = .05 or a = .01 d. There is not enough information to determine the correct decision.