Inferential Statistics for b and r

Questions

Question 1 out of 4.

Which of the following are assumptions made in the calculation of regression inferential statistics?

The errors of prediction are normally distributed.
X is normally distributed.
Y is normally distributed.
The variance around the regression line is the same for all values of X.
The relationship between X and Y is linear.

Question 2 out of 4.

The slope of a regression line is 0.8, and the standard error of the slope is 0.3. The sample used to compute this regression line consisted of 12 participants. Compute the 95% confidence interval for the slope. Type the upper limit of the confidence interval in the box below.

Question 3 out of 4.

In a sample of 20, the correlation between two variables is .5. Determine if this correlation is significant at the .05 level by calculating the t value.

Question 4 out of 4.

Calculate the lower limit of the 95% confidence interval for the correlation of .75 (N = 25).

Callback before_footer in local_aigrade component should be migrated to new hook callback for core\hook\output\before_footer_html_generation

line 7225 of /lib/moodlelib.php: call to debugging()
line 7292 of /lib/moodlelib.php: call to {closure}()
line 71 of /lib/classes/hook/output/before_footer_html_generation.php: call to get_plugins_with_function()
line 987 of /lib/classes/output/core_renderer.php: call to core\hook\output\before_footer_html_generation->process_legacy_callbacks()
line 97 of /mod/book/tool/print/index.php: call to core\output\core_renderer->footer()