1.

A random variable x has the following probability distribution,Find K​

Answer»

Answer:

Sum of all probabilities MUST be EQUAL to 1

So we GET K+2K+2K+3K+K

2

+2K

2

+7K

2

+K=1

⇒10K

2

+9K=1

⇒K=−1,

10

1

But probability cannot be negative , therefore the value of K=

10

1

The mean is 1.K+2.2K+3.2K+4.3K+5K

2

+6.2K

2

+7.7K

2

+7K

=30K+66K

2

=3+0.66=3.66

P(0

Step-by-step explanation:

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