Confidence Intervals for Correlation and Proportion: Questions | Saylor University

Callback standard_after_main_region_html in quizaccess_proctoring component should be migrated to new hook callback for core\hook\output\after_standard_main_region_html_generation

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Confidence Intervals for Correlation and Proportion: Questions | Saylor University

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Correlation

Questions

Question 1 out of 3.

Select all of the following choices that are possible confidence intervals on the population value of Pearson's correlation:

(-0.4, 0.6)
(0.3, 0.5)
(-0.85, -0.47)
(0.72, 1.2)

Question 2 out of 3.

A sample of 28 was taken from a population, and r = .45. What is the 95% confidence interval for the population correlation?

(.058, .842)
(.093, .877)
(.058, .687)
(.093, .705)

Question 3 out of 3.

The sample correlation is -0.8. If the sample size was 40, then the 99% confidence interval states that the population correlation lies between -.909 and

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

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line 7292 of /lib/moodlelib.php: call to {closure}()
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