6) A random sample of n = 25 students participated in a study to determine whether keyboard skills are improved by taking a typing
course. The typing speed of each student was recorded at the start of the course and again at the end of the course. The mean
difference for the sample is xd - 32, with a standard deviation of sd - 10. What is the 99% confidence interval for the mean
difference in typing speed?
A)
(25.818, 38.182)
B)
(26.406, 37.594)
(26.850, 37.150)
D)
(27.016, 36.984)

its 0.1 miles per minute

congruent segments

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 %