A set of 125 golf scores are normally distributed with a mean of 76 and a standard deviation of
3. About how many scores feel between one standard deviation of the mean?

the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3

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 %

just took the test and my answers down below!

step-by-step explanation:

check the pic :