Question

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 Z-Score. 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)

Answer 1