The mean lifespan of a light bulb manufactured by a company is 400 days with a standard deviation of 23 days. Assuming that the light bulb's lifespan is a normally distributed random variable, what is the probability that a light bulb manufactured by this company will last at most 350 days? a)

0.015

b)

0.985

c)

0.083

d)

0.150

i think it is 70

step-by-step explanation:

in geometry, parallel lines are lines in a plane which do not meet; that is, two lines in a plane that do not intersect or touch each other at any point are said to be parallel. by extension, a line and a plane, or two planes, in three-dimensional euclidean space that do not share a point are said to be parallel.