Unformatted text preview: (i) State the distribution of X and give your reason. (ii) Write down all the possible values of X and the corresponding probabilities. (iii) Find E(X) and Var(X). 3. Suppose X is a normal random variable with mean μ and standard deviation σ . Find the constant δ such that the probability P( μ-δσ < x < μ + δσ29 is equal to (i) 90% (ii) 95% (iii) 99% 4. The diameter of ball bearing produced in a manufacturing process can be assumed to have a uniform distribution over the interval 3.5 to 5.5 millimeters. What is the proportion of ball bearings that have a diameter less than 5 millimeters?...
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This note was uploaded on 08/30/2011 for the course STA 2023 taught by Professor Bagwhandee during the Fall '07 term at University of Central Florida.
- Fall '07