SOLUTION: Suppose X is normally distributed with mean 30 and standard deviation 8, find the value x0 such that P(X ≥ x0) = 0.95.
Algebra.Com
Question 674453: Suppose X is normally distributed with mean 30 and standard deviation 8, find the value x0 such that P(X ≥ x0) = 0.95.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Suppose X is normally distributed with mean 30 and standard deviation 8, find the value x0 such that P(X ≥ x0) = 0.95.
-----
Find the z-value with a left tail of 0.05
invNorm(0.05) = -1.645
----
Find the corresponding "x" value using x = z*s+u
xo = -1.645*8 + 30 = 16.84
==============================
Cheers,
Stan H.
===============================
RELATED QUESTIONS
Let X ∼ N(12, 5). Find the value of x0 such that
(a) P(X > x0) = 0.05
(b) P(X < x0) = (answered by ewatrrr)
The mean number of flaws per square yard in a type of carpet material is claimed to be... (answered by ewatrrr)
find the value of P(|X|<28) given that X is normally distributed with mean 25 and... (answered by rothauserc)
Suppose you are working with a data set that is normally distributed with a mean of 400... (answered by stanbon)
Suppose you are working with a data set that is normally distributed with a mean of 400... (answered by ewatrrr)
Suppose you are working with a data set that is normally distributed with a mean of 400... (answered by Boreal)
Suppose that X is normally distributed with mean 125 and standard deviation 22.
What... (answered by rothauserc)
suppose that x is normally distributed with mean 105 and standard deviation 12.
b. what... (answered by ikleyn)
Suppose X is a normally distributed random variable with the mean=10.1 and standard... (answered by stanbon)