a survey was taken of children between the ages of 3 and 7. let a be the event that the person has 2 siblings, and let b be the event that the person does not have a pet.

which statement is true about whether a and b are independent events?

a) a and b are independent events because p(a∣b) = p(a) = 0.18.
b) a and b are independent events because p(a∣b) = p(a) = 0.4.
c) a and b are not independent events because p(a∣b) = 0.4 and p(a) = 0.18.
d) a and b are not independent events because p(a∣b) = 0.18 and p(a) = 0.4.

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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 %