the stemplot displays 26 students scores on a 90 - point statistics test. the lowest possible passing grade…

the stemplot displays 26 students scores on a 90 - point statistics test. the lowest possible passing grade on the test was a 54 out of 90. what percentage of students passed this test? test scores 4|3 4|5 6 5|1 2 3 5|5 7 6|0 3 3 6|5 6 7 7 9 9 7|1 1 2 4 7|6 7 9 8|4 8|5 key: 6|8 = 68 points

the stemplot displays 26 students scores on a 90 - point statistics test. the lowest possible passing grade on the test was a 54 out of 90. what percentage of students passed this test? test scores 4|3 4|5 6 5|1 2 3 5|5 7 6|0 3 3 6|5 6 7 7 9 9 7|1 1 2 4 7|6 7 9 8|4 8|5 key: 6|8 = 68 points

Answer

Explanation:

Step1: Count total students

There are 26 students in total.

Step2: Count passing - students

Count the scores of 54 or higher. Scores 55, 57, 60, 63, 63, 65, 66, 67, 67, 69, 69, 71, 71, 72, 74, 76, 77, 79, 84, 85 are passing scores. There are 20 passing - students.

Step3: Calculate percentage

The percentage of passing students is $\frac{20}{26}\times100%\approx76.92%\approx77%$.

Answer:

77%