A group of students wants to determine the favorite snack food at their school. They know they should use a sample because the student population at their high school is 5,000. What is the best way for them to get a random sample of
100 students?
Ask the teachers at the school their opinions.
Ask every 20th student until they reach 100 students.
Ask the first 100 students that get off the bus in the morning.
Ask all the students in the cafeteria during one of the four lunch periods.

the answer is c

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answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %

explanation:

step-by-step explanation: