Work Step by Step
Using the table, the probability of z being between -2.2 and 2.5 is equal to the probability of z being less than 2.5 minus the probability of z being less than -2.2, which is: 0.9938-0.0139=0.9779.
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.