Answer:
Step-by-step explanation:
a-c is a line
I drew this by hand. sorry I it does not help.
yeah. I can't see none of you work so help ME please.
x = number of hours
want to find probability (P) x >= 13
x is N(14,1) transform to N(0,1) using z = (x - mean) / standard deviation so can look up probability using standard normal probability table.
P(x >= 13) = P( z > (13 - 14)/1) = P(z > -1) = 1 - P(z < -1) = 1 - 0.1587 = 0.8413
To convert that to percentage, multiply 100, to get 84.13%
Technically no. It extends forever in the X and Y axis, but does not have a Z axis.
