PLS I NEED HELP WITH THIS ASAP

75 students

Step-by-step explanation:

there are 100 students surveyed

25 students study for 5 or more hours

25/100 = 0.25 of the students surveyed

0.25 x 300 = 75 students

5

step-by-step explanation:

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 %