The histogram shows the distribution of resort How many students scored the Scores on Science Test
TO
Number of students
5
60-70 71-80 81-90 91-100
Test Scores
12 students
B
16 students
o
C
24 students
D
28 students

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.