1. Independent exponential random variables

λx=4, λy=1, find pdf of Z=2x+y

2. Four number r1,r2,r3,r4 are independent random variables

A uniform in interval (450,550), use central limit theorem to find P[1900≤r1+r2+r3+r4≤2100]

3. The length of product is random variable X with δ = 1mm and unknown mean four units are measured to have means of Mn(x)=203mm

Assume X is nomial random variables

(a) Find 0.95 confidence interval of mean estimate

(b) If X is unknown use Cheby shev inequality to find C by confidence coefficient is 0.95

Subject | Mathematics |

Due By (Pacific Time) | 12/04/2012 03:00 am |

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