Distribution table problem in high school mathematics? - Training Enrollment Network

Distribution table problem in high school mathematics?

Solution: (1) B may be 2 or 3 times.

A maybe 1, 2, 3, 4 times.

If b is 2p = C42/C53 *1/3+C43/C53 = 3/5.

A is 2,3,4 p =1-0.2 = 0.8.

P 1= 12/25

If b is 3 P=C42/C53*2/3=2/5.

A is 3,4 p =1-0.4 = 0.6.

P2=6/25

P=P 1+P2= 18/25

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