Assignment 2 The work required to show may require the use o

Assignment 2

The work required to show may require the use of fractions. You have two choices both acceptable.

You can either write a step involving a fraction as (20

Solution

(1)Given X~Uniform(60, 100)

f(x) = 1/(100-60) =1/40 for 60<x<100

So P(X>83) = (100-83)/40 = 0.425

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(2) P(X<10000) = P((X-mean)/s <(10000-14060)/3150)

=P(Z<-1.29) = 0.0985 (from standard normal table)