Standardized tests for certain subjects, given to high school students, are scored on a scale of 1 to 5. Let X represent the sco
re on a randomly selected exam. The distribution of scores for one subject’s standardized test is given in the table. A 2-column table with 5 rows. Column 1 is labeled score with entries 1, 2, 3, 4, 5. Column 2 is labeled Probability with entries 0.18, 0.20, 0.26, 0.21, 0.15.
What is the probability of earning a score of 3 or higher?
