1. The standard normal distribution is defined as a normal distribution with a mean of 0 and a standard deviation of 1.

  2. Z is equal to the number of standard deviations below or above the mean. Numbers below the mean have negative Z scores.

  3. 25 is 1.5 SDs above the mean: Z = (X - M)/SD = (25 - 16)/6 = 1.5

  4. Z = (X - M)/SD = (6 - 18)/5 = -2.40, Look at the table to see that the area below -2.40 is .0082. (This answer can also be found using the Java applet instead of the table.)

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 154 of /mod/book/view.php: call to core\output\core_renderer->footer()