Way to have some integrity.
You're going to fail your test, by the way.
@Niku ・( ̄∀ ̄)・
Answers must be correct to receive the money.
Show work
1.
The length of life of a washer is approximately normally distributed with mean of 3.1 years and a standard deviation of 1.2 years.?
if this type of washer is guaranteed for one year what fraction of original sales will require replacement?
2.
The time it takes you to come to school is approximately normally distributed with a mean of 45 minutes and a standard deviation of 3minutes?
what time must you leave home in the morning so that you are 95% sure of arriving at school b 9:00 AM
Way to have some integrity.
You're going to fail your test, by the way.
lol . why me D: . but nvm then .
1)μ = 3.1
σ = 1.2
standardize x to z = (x - μ) / σ
P(x < 1) = P( z < (1-3.1) / 1.2)
= P(z < -1.75) = 0.0401 ( 4 percent)
(From Normal probability table)
2)From the normal probability table, P( z < 1.645) = 0.95
z = (x - μ) / σ
1.645 = (x-45) / 3
x = (3)(1.645) + 45
x = 49.935
You must leave 49.94 minutes before 9:00 AM (approximately 8:10 AM)
wasn't that hard really . lol
"Holding anger is a poison. It eats you from inside. We think that hating is a weapon that attacks the person who harmed us. But hatred is a curved blade. And the harms we do, we do to ourselves."-Mitch Albom
Poison (11-16-2014)
Do you really give money for this questions?
somebody do my calculus homework for me
it's over riemann sums and the Fundamental theorem of calculus.
edit: wow double post GG