Question

Samantha works in an office of 50 people. She decides to ask each person at what temperature he or she works best. The results of her survey are shown in the table below.
Temperature Survey
61° - 65° 9
66° - 70° 18
71° - 75° 13
76° - 80° 10
What is the probability that the person does not work best at a temperature of 66° - 70°?

Answer 1

very old question but will respond so this can be closed

"probability that the person does *not* work best at temperature 66° - 70°?"

which means you should add up the people who do *not* work between 66-70, then divide by the total # of people.