1. If the random variable Z has a standard normal
distribution, then P(1.17 ≤ Z ≤ 2.26) is


A) 0.1091



B) 0.1203



C) 0.2118



D) 0.3944

2. Choose from the Following: Gaussian Distribution, Empirical
Rule, Standard Normal, Random Variable, Inverse Normal, Normal
Distribution, Approximation, Standardized, Left Skewed, or
ZScore.
The [_______] is also referred to as
the standard normal deviate or just the normal deviate.

3. The demand for a new product is
estimated to be normally distributed with μ = 200 and σ = 40. Let x
be the number of units demanded and find the following
probabilities. Find the probability (round to four decimal
places):

P(180 < x < 220)

4.The demand for a new product is estimated to be normally
distributed with μ = 200 and σ = 40. Let x be the number of units
demanded and find the following probabilities. Find the probability
(round to four decimal places):

P (x > 250)

5. The demand for a new product is estimated to be normally
distributed with μ = 200 and σ = 40. Let x be the number of units
demanded and find the following probabilities. Find the probability
(round to four decimal places):
P(225 < x < 250)
