Question

In: Statistics and Probability

Spin a wheel for $2.  You will win $1 twenty-five percent of the time.  You will win $3...

  1. Spin a wheel for $2.  You will win $1 twenty-five percent of the time.  You will win $3 forty-five percent of the time.  You will win $5 the rest of the time.  Find the expected value.

  1. Find P(A/B) … the probablility of A given B … using the two way table.

  

A X. Z

         B                10                       20                       30

         R                40                       50                       60

2b.  Are A and B independent?           Why?

        

       Are A and B mutually exclusive?         Why?

  1. You know that 60% of your chips are orange.  In bag A, the percentage of orange chips is 57% while in bag B, the percentage is 64%. Let R = The chip is orange.  Let A = you got the chip from bag A.  Let B = you got the chip from bag B.

Find P ( R/B )

  1. P( A ) = .3. P( B ) - .2.  P( A/B ) = .5.  Find P ( A or B ).  

  1. Find P ( X > 3 ) given the distribution for X.

X                P( x )

  1. .4
  2. .3
  3. .2
  4. .1

Solutions

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